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Tony Pearson is a Master Inventor and Senior IT Specialist for the IBM System Storage product line at the
IBM Executive Briefing Center in Tucson Arizona, and featured contributor
to IBM's developerWorks. In 2011, Tony celebrated his 25th year anniversary with IBM Storage on the same day as the IBM's Centennial. He is
author of the Inside System Storage series of books. This blog is for the open exchange of ideas relating to storage and storage networking hardware, software and services. You can also follow him on Twitter @az990tony.
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Continuing my week in Washington DC for the annual [2010 System Storage Technical University], I presented a session on Storage for the Green Data Center, and attended a System x session on Greening the Data Center. Since they were related, I thought I would cover both in this post.
Storage for the Green Data Center
I presented this topic in four general categories:
Drivers and Metrics - I explained the three key drivers for consuming less energy, and the two key metrics: Power Usage Effectiveness (PUE) and Data Center Infrastructure Efficiency (DCiE).
Storage Technologies - I compared the four key storage media types: Solid State Drives (SSD), high-speed (15K RPM) FC and SAS hard disk, slower (7200 RPM) SATA disk, and tape. I had comparison slides that showed how IBM disk was more energy efficient than competition, for example DS8700 consumes less energy than EMC Symmetrix when compared with the exact same number and type of physical drives. Likewise, IBM LTO-5 and TS1130 tape drives consume less energy than comparable HP or Oracle/Sun tape drives.
Integrated Systems - IBM combines multiple storage tiers in a set of integrated systems managed by smart software. For example, the IBM DS8700 offers [Easy Tier] to offer smart data placement and movement across Solid-State drives and spinning disk. I also covered several blended disk-and-tape solutions, such as the Information Archive and SONAS.
Actions and Next Steps - I wrapped up the talk with actions that data center managers can take to help them be more energy efficient, from deploying the IBM Rear Door Heat Exchanger, or improving the management of their data.
Greening of the Data Center
Janet Beaver, IBM Senior Manager of Americas Group facilities for Infrastructure and Facilities, presented on IBM's success in becoming more energy efficient. The price of electricity has gone up 10 percent per year, and in some locations, 30 percent. For every 1 Watt used by IT equipment, there are an additional 27 Watts for power, cooling and other uses to keep the IT equipment comfortable. At IBM, data centers represent only 6 percent of total floor space, but 45 percent of all energy consumption. Janet covered two specific data centers, Boulder and Raleigh.
At Boulder, IBM keeps 48 hours reserve of gasoline (to generate electricity in case of outage from the power company) and 48 hours of chilled water. Many power outages are less than 10 minutes, which can easily be handled by the UPS systems. At least 25 percent of the Computer Room Air Conditioners (CRAC) are also on UPS as well, so that there is some cooling during those minutes, within the ASHRAE guidelines of 72-80 degrees Fahrenheit. Since gasoline gets stale, IBM runs the generators once a month, which serves as a monthly test of the system, and clears out the lines to make room for fresh fuel.
The IBM Boulder data center is the largest in the company: 300,000 square feet (the equivalent of five football fields)! Because of its location in Colorado, IBM enjoys "free cooling" using outside air temperature 63 percent of the year, resulting in a PUE of 1.3 rating. Electricity is only 4.5 US cents per kWh. The center also uses 1 Million KwH per year of wind energy.
The Raleigh data center is only 100,000 Square feet, with a PUE 1.4 rating. The Raleigh area enjoys 44 percent "free cooling" and electricity costs at 5.7 US cents per kWh. The Leadership in Energy and Environmental Design [LEED] has been updated to certify data centers. The IBM Boulder data center has achieved LEED Silver certification, and IBM Raleigh data center has LEED Gold certification.
Free cooling, electricity costs, and disaster susceptibility are just three of the 25 criteria IBM uses to locate its data centers. In addition to the 7 data centers it manages for its own operations, and 5 data centers for web hosting, IBM manages over 400 data centers of other clients.
It seems that Green IT initiatives are more important to the storage-oriented attendees than the x86-oriented folks. I suspect that is because many System x servers are deployed in small and medium businesses that do not have data centers, per se.
Michael Scott, one of my "Second Life" builder/scripters, for demonstrating client-focused dedication to IBM's corporate values.
Our site manager, Terri Mitchell, did a recap of all our recent awards and accomplishments.Of the nine Design Innovation awards won by IBM this year at the CeBIT conference, eight were for IBM System Storage products!
The IBM System Storage EXP3000: an entry-level data storage server that is optimized for cost-sensitive and space-limited environments and employs a user-centered design that enables ease of use and simple tool-less installation and removal of all components.
The IBM System Storage N7000 Series: a modular disk storage system that delivers high-end enterprise storage and data management value ideal for large-scale applications, while helping to anticipate growth, maintaindata availability and reduce costs.
The IBM System Storage N5000 Series: a modular disk storage system designed to address the entire spectrum of data availability challenges while offering value in price and scalability. Built-in enterprise serviceability and manageability features support efforts to increasereliability and simplify storage infrastructure and maintenance.
The IBM System Storage N3700: a filer that integrates storage and storage processing into a single unit, facilitating affordable network deployments.
The IBM System Storage DS4700: a NEBS-compliant disk storage server designed to address requirements for companies in the telecommunications industry, as well as other segments, such as oil and gas, meeting standardsfor electromagnetic compatibility, thermal robustness, earthquake and office vibration resistance, and provides protection for the product components from airborne contaminants.
The IBM System Storage EXP810: a data storage expansion unit capable of 4.8 Terabytes of physical storage, with a user-centered and tool-less design featuring redundant power, cooling, and disk modules for ease of use and simple serviceability.
The IBM System Storage TS3400: an affordable, space-friendly tape library for users in remote locations that supports enterprise-class technology and encryption capabilities.
A representative from Tucson's Brewster Center presented Terri an award, thanking IBM for its strong support for the community through various charity initiatives.
The final speaker was a new IBM client, Tony Casella, the IT Director of the town of Marana. Recently, the town of Marana selected IBM products made big news. Arizona is the fastest growing state in the USA, and the town of Marana, just north of Tucson, is one of the fastest growing communities in Arizona. The town is growing so large that it will soon spill over from Pima into Pinal county, and will be the first town in Arizona authorized to span county boundaries.
Well, it's Tuesday, and so it is "announcement day" again! Actually, for me it is Wednesday morning herein Mumbai, India, but since I was "press embargoed" until 4pm EDT in talking about these enhancements, I had to wait until Wednesday morning here to talk about them.
World's Fastest 1TB tape drive
IBM announced its new enterprise [TS1130 tape drive]and corresponding [TS3500 tape library support]. This one has a funny back-story. Last week while we were preparing the Press Release, we debated on whether we should compare the 1TB per cartridge capacity as double that of Sun's Enterprise T10000 (500GB), or LTO-4 (800GB). The problem changed when Sun announced on Monday they too had a 1TB tape drive, so now instead ofsaying that we had the "World's First 1TB tape drive", we quickly changed this to the "World's Fastest 1TB tape drive" instead. At 160MB/sec top speed, IBM's TS1130 is 33 percent faster than Sun's latest announcement. Sun was rather vague when they will actually ship their new units, so IBM may still end up being first to deliver as well.
While EMC and other disk-only vendors have stopped claiming that "tape is dead", these recent announcements from IBM and Sun indicate that indeed tape is alive and well. IBM is able to borrow technologies from disk, such as the Giant Magneto Resistive (GMR) head over to its tape offerings, which means much of the R&D for disk applies to tape, keeping both forms ofstorage well invested. Tape continues to be the "greenest" storage option, more energy efficient than disk, optical, film, microfiche and even paper.
On the LTO front, IBM enhanced the reporting capabilities of its[TS3310] midrange tape library. This includes identifying the resource utilization of the drives, reporting on media integrity, and improved diagnostics to support library-managed encryption.
IBM System Storage DR550
As a blended disk-and-tape solution, the [IBM System Storage DR550] easily replaces the EMC Centera to meet compliance storagerequirements. IBM announced that we have greatly expanded its scalability, being able to support both 1TBdisk drives, as well as being able to attach to either IBM or Sun's 1TB tape drives.
Massive Array of Idle Disks (MAID)
IBM now offers a "Sleep Mode" in the firmware of the [IBM System Storage DCS9550], which is often called "Massive Array of Idle Disks" (MAID) or spin-down capability. This can reduce the amount of power consumed during idle times.
That's a lot of exciting stuff. I'm off to breakfast now.
The "Storage Symposium Mexico - 2008" conference was a great success this week!
Day 1 - The plan was for me to arrive for the Wednesday night reception. Eachattendee was given a copy of my latest book[Inside System Storage: Volume I] and I was planning to sign them. I thought perhaps we should have a "book signing" tablelike all of the other published authors have.
Things didn't go according to plan. Thunderstorms at the Mexico City airport forced our pilot to find an alternate airport. Nearby Acapulco airport was the logical choice, but was full from all the otherflights, so the plane ended up in a tiny town called McAllen, Texas. I did not arrive until the morning of Day 2,so ended up signing the books throughout Thursday and Friday, during breaks and meals, wherever they couldfind me!
Special thanks to fellow IBMer Ian Henderson who picked me up from the airport at such an awkward hour anddrive me all the way to Cuernavaca!
All of us, IBMers, Business Partners and clients alike, all donned black tee-shirtswith a white eightbar logo for a group photo with one of those "wide lens" cameras. While we werebeing assembled onto the bleachers, I took this quick snapshot of myself and some of the guys behind me.
I was original scheduled to be first to speak, but with my flight delays, was moved to a time slot after lunch.After a big Mexican lunch, the conference coordinators were afraid the attendees might fall asleep,a Mexican tradition called [siesta], so I wasinstructed to WAKE THEM UP! Fortunately, my topic was Information Lifecycle Management, a topicI am very passionate about, since my days working on DFSMS on the mainframe. With 30percent reduction in hardware capital expenditures, 30 percent reduction in operational costs, and typical payback periods between 15 to 24 months, the presentation got everyone's attention.
Of course, a lot happens outside of the formal meetings. We had a Japanese theme dinner, where we woreJapanese Hachimaki [headbands]with the eightbar logo. For those not familiar with Japanese culture, hachimaki are worn today not so much for the practical purpose to catch the perspiration but rather for mental stimulation to express one's determination. Some students wear hachimaki when they study to put themselves in the right spirit and frame of mind.
Shown here are presenters Mike Griese (Infrastructure Management with IBM TotalStorage Productivity Center),Dave Larimer (Backup and Storage Management with IBM Tivoli Storage Manager), myself, and John Hamano(Unified Storage with IBM System Storage N series).
Day 3 - Wrapping up the week, I presented two more times.
First, I covered IBM Disk Virtualization with IBM SAN Volume Controller. One interesting question was if the SAN Volume Controller could be made to looklike a Virtual Tape Library. I explained that this was never part of the original design, but that if you wantto combine SVC with a VTL into a combined disk-and-tape blended solution, consider using theIBM product called Scale-Out File Services[SoFS] which I covered in my post[Moredetails about IBM clustered scalable NAS].
During one of the breaks, I took a picture of the behind-the-scenes staff that put this together. They had created these huge blocks representing puzzle pieces, emphasizing how IBM is one of the few ITvendors that can bring all the pieces together for a complete solution.
Shown hereare Mike Griese (presenter), Cyntia Martinez, Claudia Aviles, Cesar Campos (IBM Business Unit Executive forSystem Storage in Mexico), and Claudia Lopez. Each day the staff wore matching shirts so that it was easyto find them.
Later, I covered Archive and Compliance Solutions to highlight our complete end-to-end set of solutions.When asked to compare and contrast the architectures of the IBM System Storage DR550 with EMC Centera, I explainedthat the DR550 optimizes the use of online disk access for the most recent data. For example, if you aregoing to keep data for 10 years, maybe you keep the most recent 12 months on disk, and the rest is moved,using policy-based automation, to a tape library for the remaining nine years. This means that the disk insidethe DR550 is always being used to read and write the most recent data, the data you are most likely to retrievefrom an archive system. Data older than a year is still accessible, but might take a minute or two for the tapelibrary robot to fetch.The EMC Centera, on the other hand, is a disk-only solution. It offers no option to move older data to tape,nor the option to spin-down the drives to conserve power. It fills up after the same 12 months or so, and then you get towatch it the remaining nine years, consuming electricity and heating your data center.
I don't know about you, butI have never seen anyone purposely put in "space heaters" into their data center, but certainly a full EMC Centeradoes little else. Both devices use SATA drives and support disk mirroring between locations, but IBM DR550 offers dual-parity RAID-6, and supports encryption of the data on both the disk and the tape in the DR550. EMC Centerastill uses only RAID-5, and has not yet, as far as I know, offered any level of encryption. IBM System StorageDR550 was clocked at about three times faster than Centera at ingesting new archive objects over a 1GbE Ethernet connection.
This last photo is me and fellow IBMer Adriana Mondragón. She was one of my students in the [System Storage Portfolio Top Gun class],last February in Guadalajara, Mexico.She graduated in the top 10 percent of her group, earning her the prestigious titleof "Top Gun" storage sales specialist.
The conference wrapped up with a Mexican lunch with a traditional Mariachi band. I took pictures, but figured you allalready know what [Mariachi players] look like, and I didn't wantto detract from the otherwise serious tone of this blog post! This was the first System Storage Symposium in Mexico, butbased on its success, we might continue these annually.
This month (September, 2006) marks our 50th anniversary of the disk system. The first disk system was the 350 Disk Storage Unit, designed to attach to the IBM 305 RAMAC mainframe computer, both introduced to the world in September, 1956.
The weather has warmed up here in Tucson so I started my Spring Cleaning early this year and unearthed from my garage a [Bankers Box] full of floppy diskettes.
IBM invented the floppy disk back in 1971, and continued to make improvements and enhancements through the 1980s and 1990s. It will be one of the many inventions celebrated as part of IBM's Centennial (100-year) anniversary. Here is an example [T-shirt]
IBM needed a way to send out small updates and patches for microcode of devices out in client locations. IBM had drives that could write information, and sent out "read-only" drives to the customer locations to receive these updates. These were flexible plastic circles with a magnetic coating, and placed inside a square paper sleeve. Imagine a floppy disk the size of a piece of standard paper. The 8-inch floppy fit conveniently in a manila envelope, sendable by standard mail, and could hold nearly 80KB of data.
I've been using floppies for the past thirty years. Here's some of my fondest memories:
While still in high school, my friend Franz Kurath and I formed "Pearson Kurath Systems", a software development firm. We wrote computer programs to run on UNIX and Personal Computers for small businesses here in Tucson. Whenever we developed a clever piece of code, a subroutine or procedure, we would save it on a floppy disk and re-use it for our next project. We wrote in the BASIC language, and our databases were simple Comma-Separated-Variable (CSV) flat files.
The 5.25-inch floppies we used could hold 360KB, and were flexible like the 8-inch models. Later versions of these 5.25-inch floppies would be able to hold as much as 1.2MB of data. We would convert single-sided floppies into double-sided ones by cutting out a notch in the outer sleeve. Covering up the notches would mark them as read-only.
The 3.5-inch floppies were introduced with a hard plastic shell, with the selling point that you can slap on a mailing label and postage and send it "as is" without the need for a separate envelope. These new 3.5-inch floppies would carry "HD" for high density 720KB, and double-sided versions could hold 1.44MB of data. The term "diskette" was used to associate these new floppies with [hard-shelled tape cassettes]. Sliding a plastic tab would allow floppies to be marked "read-only". IBM has the patent on this clever invention.
Continuing our computer programming business in college, Franz and I took out a bank loan to buy our first Personal Computer, for over $5000 dollars USD. Until then, we had to use equipment belonging to each client. The banks we went to didn't understand why we needed a computer, and suggested we just track our expenses on traditional green-and-white ledger paper. Back then, peronsal computers were for balancing your checkbook, playing games and organizing your collection of cooking recipies. But for us, it was a production machine. A computer with both 5.25-inch and 3.5-inch drives could copy files from one format to another as needed. The boost in productivity paid for itself within months.
Apple launched its Macintosh computer in 1984, with a built-in 3.5-inch disk drive as standard equipment. Here is a YouTube video of an [astronaut ejecting a floppy disk] from an Apple computer in space.
In my senior year at the University of Arizona, my roommate Dave had borrowed my backpack to hold his lunch for a bike ride. He thought he had taken everything out, but forgot to remove my 3.5-inch floppy diskette containing files for my senior project. By the time he got back, the diskette was covered in banana pulp. I was able to rescue my data by cracking open the plastic outer shell, cleaning the flexible magnetic media in soapy water, placing it back into the plastic shell of a second diskette, and then copied the data off to a third diskette.
After graduating from college, Franz and I went our separate ways. I went to work for IBM, and Franz went to work for [Chiat/Day], the advertising agency famous for the 1984 Macintosh commercial. We still keep in touch through Facebook.
At IBM, I was given a 3270 terminal to do my job, and would not be assigned a personal computer until years later. Once I had a personal computer at home and at work, the floppy diskette became my "briefcase". I could download a file or document at work, take it home, work on it til the wee hours of the morning, and then come back the next morning with the updated effort.
To help prepare me for client visits and public speaking at conferences, IBM loaned me out to local schools to teach. This included teaching Computer Science 101 at Pima Community College. When asked by a student whether to use "disc" or "disk", I wrote a big letter "C" on the left side of the chalkboard, and a big letter "K" on the right side. If it is round, I told the students while pointing at the letter "C", like a CD-ROM or DVD, use "disc". If it has corners, pointing to corners of the letter "K", like a floppy diskette or hard disk drive, use "disk".
On one of my business trips to visit a client, we discovered the client had experienced a problem that we had just recently fixed. Normally, this would have meant cutting a Program Trouble Fix (PTF) to a 3480 tape cartridge at an IBM facility, and send it to the client by mail. Unwilling to wait, I offered to download the PTF onto a floppy diskette on my laptop, upload it from a PC connected to their systems, and apply it there. This involved a bit of REXX programming to deal with the differences between ASCII and EBCDIC character sets, but it worked, and a few hours later they were able to confirm the fix worked.
In 1998, Apple would signal the begining of the end of the floppy disk era, announcing their latest "iMac" would not come with an internal built-in floppy drive. David Adams has a great article on this titled [The iMac and the Floppy Drive: A Conspiracy Theory]. You can get external floppy drives that connect via USB, so not having an internal drive is no longer a big deal.
While teaching a Top Gun class to a mix of software and hardware sales reps, one of the students asked what a "U" was. He had noticed "2U" and "3U" next to various products and wondered what that was referring to. The "U" represents the [standard unit of measure for height of IT equipment in standard racks]. To help them visualize, I explained that a 5.25-inch floppy disk was "3U" in size, and a 3.5-inch floppy diskette was "2U". Thus, a "U" is 1.75 inches, the thinnest dimension on a two-by-four piece of lumber. Servers that were only 1U tall would be referred to as "pizza boxes" for having similar dimensions.
Every year, right around November or so, my friends and family bring me their old computers for me to wipe clean. Either I would re-load them with the latest Ubuntu Linux so that their kids could use it for homework, or I would donate it to charity. Last November, I got a computer that could not boot from a CD-ROM, forcing me to build a bootable floppy. This gave me a chance to check out the various 1-disk and 2-disk versions of Linux and other rescue disks. I also have a 3-disk set of floppies for booting OS/2 in command line mode.
So while this unexpected box of nostalgia derailed my efforts to clean out my garage this weekend, it did inspire me to try to get some of the old files off them and onto my PC hard drive. I have already retrieved some low-res photographs, some emails I sent out, and trip reports I wrote. While floppy diskettes were notorious for being unreliable, and this box of floppies has been in the heat and cold for many Arizonan summers and winters, I am amazed that I was able to read the data off most of them so far, all the way back to data written in 1989. While the data is readable, in most cases I can't render it into useful information. This brings up a few valuable lessons:
Backups are not Archives
Some of the files are in proprietary formats, such as my backups for TurboTax software. I would need a PC running a correct level of Windows operating system, and that particular software, just to restore the data. TurboTax shipped new software every year, and I don't know how forward or backward-compatible each new release was.
Another set of floppies are labeled as being in "FDBACK" format. I have no idea what these are. Each floppy has just two files, "backup.001" and "control.001", for example.
Backups are intended solely to protect against unexpected loss from broken hardware or corrupted data. If you plan to keep data as archives for long-term retention, use archive formats that will last a long time, so that you can make sense of them later.
Operating System Compatibility
Windows 7 and all of my favorite flavors of Linux are able to recognize the standard "FAT" file system that nearly all of my floppies are written in. Sadly, I have some files that were compressed under OS/2 operating system using software called "Stacker". I may have to stand up an OS/2 machine just to check out what is actually on those floppies.
You can't judge a book by its cover
Floppies were a convenient form of data interchange. Sometimes, I reused commercially-labeled floppies to hold personal files. So, just because a floppy says "America On-Line (AOL) version 2.5 Installation", I can't just toss it away. It might actually contain something else entirely. This means I need to mount each floppy to check on its actual contents.
So what will I do with the floppies I can't read, can't write, and can't format? I think I will convert them into a [retro set of coasters], to protect my new living room furniture from hot and cold beverages.
A lot of people ask me about IBM branding, as we have recently changed brands. In the past we had two separate brands, one for servers (eServer) and one for storage (TotalStorage). These would be fine if we wanted to promote their independence, but customers today want synergy between servers and storage, they want systems that work well together.
Last year, in response to market feedback, we crated a new brand, "IBM Systems" and put all the server and storage product lines under one roof. Over time, we will transition from TotalStorage to System Storage naming. This will occur with new products, and major versions of existing products.
Two other phrases you will hear in the names of our offerings are "Virtualization Engine" and "Express". These are portfolio identifiers. The Virtualization Engine identifier was created to emphasize our leadership in system virtualization, and we have products that span product lines with this identifier.
The Express identifier was created to emphasize our focus on Small and Medium sized business (SMB). It spans not just servers and storage, but across other offerings from other IBM divisions.
Of course, just renaming products and services isn't enough. Systems don't work together just because they have similar names, are covered in similar "Apple white" plastic, or have similar black bezels. Obviously, thoughtful and collaborative design are needed, with the appropriate amounts of engineering and testing. IBM is aligning its server and storage development so that the IBM Systems brand keeps its promise.
With all the announcements we had in June, it is easy for some of the more subtle enhancements to get overlooked. While I was at Orlando for the IBM Edge conference, I was able to blog about some of the key featured announcements. Then, later, when I got back from Orlando to Tucson, I was able to then blog about [More IBM Storage Announcements]. For IBM's Scale-Out Network Attach Storage (SONAS), I had simply:
"SONAS v1.3.2 adds support for management by the newly announced IBM Tivoli Storage Productivity Center v5.1 release. Also, IBM now officially supports Gateway configurations that have the storage nodes connected to XIV or Storwize V7000 disk systems. These gateway configurations offer new flexible choices and options for our ever-expanding set of clients."
In my defense, IBM numbers its software releasees with version.release.modification, so 1.3.2 is Version 1, Release 3, Modification 2. Generally, modification announcements don't get much attention. The big announcement for v1.3.0 of SONAS happened last October, see my blog post [October 2011 Announcements - Part I] or
the nice summary post [IBM Scale-out Network Attached Storage 1.3.0] from fellow blogger Roger Luethy.
Here is a diagram showing the three configurations of SONAS.
I have covered the SONAS Appliance model in depth in previous blogs, with options for fast and slow disk speeds, choice of RAID protection levels, a collection of enterprise-class software features provided at no additional charge, and interfaces to support a variety of third party backup and anti-virus checking software.
The basics haven't changed. The SONAS appliance consists of 2 to 32 interface nodes, 2 to 60 storage nodes, and up to 7,200 disk drives. The maximum configuration takes up 17 frames and holds 21.6PB of raw disk capacity, which is about 17PB usable space when RAID6 is configured. An interface nodes has one or two hex-core processors with up to 144GB of RAM to offer up to 3.5GB/sec performance each. This makes IBM SONAS the fastest performing and most scalable disk system in IBM's System Storage product line.
I thought I would go a bit deeper on the gateway models. These models support up to ten storage nodes, organized in pairs. The key difference is that instead of internal disk controllers, the storage nodes connect to external disk systems. There is enough space in the base SONAS rack to hold up to six interface nodes, or you can add a second rack if you need more interface nodes for increased performance.
SONAS with XIV gateway
XIV offers a clever approach to storage that allows for incredibly fast access to data on relatively slow 7200 RPM drives. By scattering data across all drives and taking advantage of parallel processing, rebuild times for a failed 3TB drive are less than 75 minutes. Compare that to typical rebuild times for 3TB drives that could take as much as 9-10 hours under active I/O loads!
In the configuration, each pair of storage nodes can connect to external SAN Fabric switches that then connect to one or two XIV storage systems. How simple is that? These can be the original XIV systems that support 1TB and 2TB drives, or the new XIV Gen3 systems that support 400GB Solid-state drives (SSD) and 3TB spinning disk drives. In both cases, you can acquire additional storage capacity as little as 12 drives at a time (one XIV module holds 12 drives).
The maximum configuration of ten XIV boxes could hold 1,800 drives. At 3TB drive per drive, that would be 2.4PB usable capacity.
The SONAS with XIV gateway does not require the XIV devices to be dedicated for SONAS purposes. Rather, you can assign some XIV storage space for the SONAS, and the rest is available for other servers. In this manner, SONAS just looks like another set of Linux-based servers to the XIV storage system. This in effect gives you "Unified Storage", with a full complement of NAS protocols from the SONAS side (NFS, CIFS, FTP, HTTPS, SCP) as well as block-based protocols directly from the XIV (FCP, iSCSI).
SONAS with Storwize V7000 gateway
The other gateway offering is the SONAS with Storwize V7000. Like the SONAS with XIV gateway model, you connect a pair of SONAS storage nodes to 1 or 2 Storwize V7000 disk systems. However, you do not need a SAN Fabric switch in between. You can instead connect the SONAS storage nodes directly to the Storwize V7000 control enclosures.
To acquire additional storage capacity, you can purchase a single drive at a time. That's right. Not 12 drives, or 60 drives, at a time, but one at a time. The Storwize V7000 supports a wide range of SSD, SAS and NL-SAS drives at different sizes, speeds and capacities. The drives can be configured into various RAID protection levels: RAID 0, 1, 3, 5, 6 and 10.
Each Storwize V7000 control enclosure can have up to nine expansion drawers. If you choose the 2.5-inch 24-bay models, you can have up to 480 drives per storage node pair, for a total of 2,400 drives. If you choose the 3.5-inch 12-bay models, you can have up to 240 drives per node pair, 1,200 drives total. At 3TB per drive, this could be 3.6PB of raw capacity. The usable PB would depend on which RAID level you selected. Of course, you don't have to limit yourself all to one size or the other. Feel free to mix 2.5-inch and 3.5-inch drawers to provide different storage pool capabilities.
All three SONAS configurations support Active Cloud Engine. This is a collection of features that differentiate SONAS from the other scale-out NAS wannabees in the marketplace:
Policy-driven Data Placement -- Different files can be directed to different storage pools. You no longer have to associate certain file systems to certain storage technologies.
High-speed Scan Engine -- SONAS can scan 10 million files per minute, per node. These scans can be used to drive data migration, backups, expirations, or replications, for example. It is over 100 times faster than traditional walk-the-directory-tree approaches employed by other NAS solutions.
Policy-driven Migration -- You can migrate files from one storage pool to another, based on age, days since last reference, size, and other criteria. The files can be moved from disk to disk, or move out of SONAS and stored on external media, such as tape or a virtual tape library. A lot of data stored on NAS systems is dormant, with little or no likelihood of being looked at again. Why waste money keeping that kind of data on expensive disk? With SONAS, you can move those files to tape can save lots of money. The files are stubbed in the SONAS file system, so that an access request to a file will automatically trigger a recall to fetch the data from tape back to the SONAS system.
Policy-driven Expiration -- SONAS can help you keep your system clean, by helping you decide what files should be deleted. This is especially useful for things like logs and traces that tend to just hang around until some deletes them manually.
WAN Caching -- This allows one SONAS to act as a "Cloud Storage Gateway" for another SONAS at a remote location connected by Wide Area Network (WAN). Let's say your main data center has a large SONAS repository of files, and a small branch office has a smaller SONAS. This allows all locations to have a "Global" view of the all the interconnected SONAS systems, with a high-speed user experience for local LAN-based access to the most recent and frequently used files.
If you want to learn more, see the [IBM SONAS landing page]. Next week, I will be across the Pacific Ocean in [Taipei], to teach IBM Top Gun class to sales reps and IBM Business Partners. "Selling SONAS" will be one of the topics I will be covering!
It has always been the case in fast pace technology areas that you can't tell the players without a program card, andthis is especially true for storage.
When analyzing each acquistion move, you need to think of what is driving it. What are the motives?Having been in the storage business 20 years now, and seen my share of acquisitions, both from within IBM,as well as competition, I have come up with the following list of motives.
Although slavery was abolished in the US back in the 1800's, and centuries earlier everywhere else, many acquisitionsseem to be focused on acquiring the people themselves, rather than the products or client list. I have seen statistics such as "We retained 98% of the people!" In reality, these retentions usually involve costly incentives,sign-in bonuses, stock options, and the like. Desptie this, people leave after a few years, often because ofpersonality or "corporate culture" clash. For example, many former STK employees seem to be leaving after their company was acquired by Sun Microsystems.
If you can't beat them, join them. Acquisitions can often be used by one company to raise its ranking in marketshare, eliminating smaller competitors. And now that you have acquired their client list, perhaps you can sellthem more of your original set of products!
Symantec had acquired Veritas, which in turn had acquired a variety of other smaller players, and the end result is that they are now #1 backup software provider, even though none of theirproducts holds a candle to IBM's Tivoli Storage Manager. Meanwhile, EMC acquired Avamar to try to get more into the backup/recovery game, but most analysts still find EMC down in the #4 or #5 place in this category.
Next month,Brocade's acquisition of McData should take effect, furthering its marketshare in SAN switch equipment.
Prior to my current role as "brand market strategist" for System Storage, I was a "portfolio manager" where wetried to make sure that our storage product line investments were balanced. This was a tough job, as the investmentshad to balance the right development investments into different technologies, including patent portfolios.Despite IBM's huge research budget, I am not surprised that some clever inventions of new technologies comefrom smaller companies, that then get acquired once their results appear viable.
The last motive is value shift. This is where companies try to re-invent themselves, or find that they are stuck in acommodity market rut, and wish to expand into more profitable areas.
LSI Logic acquisition of StoreAge is a good exampleof this. Most of the major storage vendors have already shifted to software and services to provide customer value,as predicted in 1990's by Clayton Christensen in his book "The Innovator's Dilemma". The rest are still strugglingto develop the right strategy, but leaning in this general direction.
Jon Toigo over at DrunkenData writes in his post[A Wink and a Nod] about thebenefits of the new IBM System z10 Enterprise Class mainframe. Here's an excerpt about storage:
"The other key point worth making about this scenario is that storage behind a z10 must conform to IBM DASD rules. That means no more BS standards wars between knuckle-draggers in the storage world who continue to mitigate the heterogeneous interoperability and manageability of distributed systems storage using proprietary lock in technologies designed as much to lock in the consumer and lock out the competition as to deliver any real value. That has got to be worth something."
For z/OS and TPF operating systems, disk must support CCW commands over ESCON or FICON connections, or NFS commandsover the Local Area Network. However, most of the workloads that are being ported over from x86 platforms willprobably be running Linux on System z images, and as such Linux supports both CCW and SCSI protocols, the latterover native FCP connections through a Storage Area Network (SAN) or via iSCSI over the Local Area Network. Many SAN directors support both FCP and FICON, and the z10 also supports both 1Gbps and 10Gbps Ethernet, so you may not have to invest in any new networking gear.
The best part is that you may not have to migrate your data. The IBM System Storage SAN Volume Controller is supported for Linux on System z, and with "image mode" you can leave the data in its original format on its original disk array. Many file systems are now supported by Linux, including Windows NTFS with the latest NTFS-3G driver.
If your data is already on NAS storage, such as the IBM System Storage N series disk systems, then the IBM z10can access it directly, from z/OS, z/VM or Linux.
Have lots of LTO tape data? Linux on System z supports LTO as well.
Jon continues his rant with a question about porting Microsoft Windows applications. Here's another excerpt:
"For one, what do we do with all the Microsoft servers. There is no Redmond-sanctioned approach to my knowledge for virtualizing Microsoft SQL Server or Exchange Server in a mainframe partition."
Yes, it is possible to run Windows on a mainframe through emulation, but I feel that's the wrong approach. Instead, the focus should be on running "functionally equivalent" programs on the native mainframe operating systems, and again Linuxis often the best choice for this. Switching from Windows to Linux may not be "Redmond-sanctioned", but it getsthe job done.
Instead of SQL Server, consider something functionally equivalent like IBM's DB2 Universal Database, or perhaps an open source database like MySQL, PostgreSQL or Apache Derby. Well-written applications use standard SQL calls, so ifthe application does not try to use unique, proprietary features of MS SQL Server, you are in good shape.
In my discussion last November on [Microsoft Exchange email server], I mentioned that Bynari makes a functionally equivalent email server on Linux that works with your existing Microsoft Outlook clients. Your end-users wouldn't know you migrated to a mainframe! (well, they might notice their email runs faster)
So if your data center has three or more racks of Sun, Dell or HP "pizza box" or "blade" x86 servers, chances are you can migrate the processing over to a shiny new IBM z10 EC mainframe, save some money in the process, without too much impact to your existing Ethernet, SAN or storage system infrastructure. IBM can even help you dispose of the oldx86 machines so that their toxic chemicals don't end up in any landfill.
When new technologies are introduced to the marketplace, it is normal for customers to be skeptical.
My sister is a mechanical engineer, so when she needs to configure a part or component, she candesign it on the computer, and then use a "Rapid Prototyping Machine"that acts like a 3D printer, to generate a plastic part that matches the specifications. Some machinesdo this by taking a hunk of plastic and cutting it down to the appropriate shape, and others use glue andpowder to assemble the piece.
But not everything is that simple. Harry Beckwith deals with the issue of selling services and software featuresin his book "Selling the Invisible". How do you sell a service before it is performed? How do you sell a softwarefeature based on new technology that the customer is not familiar with?
Our good friends over at NetApp, our technology partners for the IBM System Storage N series, developed a"storage savings estimator" tool that can provide good insight into the benefits of Advanced Single InstanceStorage (A-SIS) deduplication feature.
I decided to run the tool to analyze my own IBM Thinkpad C: drive (Windows operating system and programs) and D: drive ("My Documents" folder containing all my data files) to see how much storage savings thetool would estimate. Here are my results:
WINXP-C-07G (C: drive)Total Number of Directories: 1272Total Number of Files: 56265Total Number of Symbolic Links: 0Total Number of Hard Links: 41996Total Number of 4k Blocks: 2395884Total Number of 512b Blocks: 18944730Total Number of Blocks: 2395884Total Number of Hole Blocks: 290258Total Number of Unique Blocks: 1611792Percentage of Space Savings: 20.61Scan Start Time: Wed Sep 5 14:37:06 2007Scan End Time: Wed Sep 5 14:53:51 2007
WINXP-D-07H (D: drive)Total Number of Directories: 507Total Number of Files: 7242Total Number of Symbolic Links: 0Total Number of Hard Links: 11744Total Number of 4k Blocks: 3954712Total Number of 512b Blocks: 31610595Total Number of Blocks: 3954712Total Number of Hole Blocks: 3204Total Number of Unique Blocks: 3524605Percentage of Space Savings: 10.79Scan Start Time: Wed Sep 5 14:21:16 2007Scan End Time: Wed Sep 5 14:34:30 2007
I am impressed with the results, and have a better understanding of the way A-SIS works. A-SIS looks at every4kB block of data, and creates a "fingerprint", a type of hash code of the contents. If two blocks have different "fingerprints", then the contents are known to be different. If two blocks have the same fingerprint, it is mathematically possible for them to be unique in content, so A-SIS schedules a byte-for-byte comparison to be sure they are indeed the same. This might happen hours after the block is initially written to disk, but is a much safer implementation, and does not slow down the applications writing data.
(In an effort to provide support "real time" as data was being written, earlier versions of deduplication
had to either assume that a hash collision was a match, or take time to perform the byte-for-byte comparisonrequired during the write process. Doing this byte-for-byte comparison when the device is the busiest doingwrite activities causes excessive undesirable load on the CPU.)
The estimator tool runs on any x86-based Laptop, personal computer or server, and can scan direct-attached, SAN-attached, or NAS-attached file systems. If you are a customer shopping around for deduplication, ask your IBM pre-sales technical support, storage sales rep, or IBM Business Partner to analyze your data. Tools like this can help make a simple cost-benefit analysis: the cost of licensing the A-SIS software feature versus the amount of storage savings.
In his blog Rough Type, Nick Carr asks Where is my CloudBook?and points to John Markoff's 2-part series in the New York Times on computing in the clouds.(Read it here: Part 1, Part 2)
At first, I thought he meant computing while in an airplane, but instead, he is talking about computing on a laptop or other hand-held device that does not have an internal disk drive, no installedoperating system, no internal data storage. Instead, the idea is that you boot from a CD, accessyour data, and even some of your programs, over the internet. John used an Ubuntu Linux LiveCD in his example.
This week, I am in Sao Paulo, Brazil, and was "in the clouds" for over 10 hours flying from Dallas to here.The one time I am guaranteed "off-line" from the internet is on the plane, and I spend enough time on planesthat I am able to get work done despite being "disconnected".
The same reasons people want to get out of having a disk drive on their laptop, are the reasons data centersare getting out of internal disk on their servers.
disks crash, and typically are not protected in any RAID configuration on most laptops
operating systems get infected with viruses and malware
storage on one server is generally inaccessible to every other server
Booting from CD is especially clever. No more worrying about fixing your Windows registry, viruses,corrupted operating system files, or the cruft that accumulates on your C: drive that slowsyou down. The CD is the sameevery time, so it is like running your system with a freshly installed operating system every day.
The need for central repositories of data harkens back to the years of the IBM mainframe. Of course, whatmade sense back then continues to make sense now. The old 3270 terminals stored no data, and instead merelyprovided keyboard input and display text screen output to the vast amount of data stored on the central system.Today, the inputs are different, using your finger or mouse instead to point to what you want, sliding itacross to make things happen, and the output may now include photos, audio and video, but the concept isstill the same.
I carry my Ubuntu Linux LiveCD with me on every business trip. Combined with externally rewriteable media,such as a USB key, you can get work done even when you are in an airplane, and upload it whenyou are back on the net.
Two European scientists, Albert Fert (France) and Peter Grunberg (Germany) have won the 2007 Nobel Prize for physics for their research into Giant Magnetoresistance, or GMR. GMR read/write heads are used in IBM disk systems.
New high-density dual-coated particulate magnetic tape: Developed by Fuji Photo Film Co., Ltd., in Japan in collaboration with IBM Almaden researchers, this next-generation version of its NANOCUBIC™ tape uses a new barium-ferrite magnetic media that enables high-density data recording without using expensive metal sputtering or evaporation coating methods.
More sensitive read-write head: For the first time, magnetic tape technology employs the sensitive giant-magnetoresistive (GMR) head materials and structures used to sense very small magnetic fields in hard disk drives.
GMR servo reader: New GMR servo-reading elements, software and fast-and-precise positioning devices provides an active feedback system with unprecedented 0.35-micron accuracy in monitoring and positioning the read-write head over the 1.5-micron-wide residual data track.
Improved tape-handling features: Flangeless, grooved rollers permit smoother high-speed passage of the tape, which also enhances the ability of the head to write and read high-density data.
Innovative signal processing algorithms for the read data channel: An advanced read channel used new "noise-predictive, maximum-likelihood" (NPML) software developed at IBM's Zurich Research Laboratory to process the captured data faster and more accurately than would have been possible with existing methods.
IBM often leverages the research done in one part of its business over to other parts of its business. In this manner, advances in disk translate into advances in tape, keeping tape a viable medium for at least the next 8-10 years.