Comment (1) Visits (7914)
Oh my, it is Tuesday again, and you know what that means? IBM Announcements!
This week, IBM announced its latest storage arrays in its IBM System Storage DS8000 series: the DS8880 models. Similar to the "Business Class" vs. "Enterprise Class" distinctions of the DS8870, IBM announced two new models, the DS8884 and the DS8886.
All of the new DS8880 models are based on the latest IBM POWER8 processors, and are noticeably thinner! These are now standard 19-inch wide, fitting nicely into standard IBM racks alongside most other standard 19-inch rack equipment.
The DC-UPS that used to be on the side are now at the bottom of each frame, taking up 8U of space. The High Performance Flash Enclosures (HPFE) that formerly were stored vertically above the DC-UPS will be stored horizontally with the rest of the HDD and SSD drives.
In previous DS8000 models, clients would have one Hardware Management Console (HMC) inside the array, and an optional second HMC workstation somewhere else for high availability. While the second one was optional, it was always considered best practice to have it for redundancy sake. In the new DS8880 models, you can have both HMC in the array, and the Keyb
The new I/O enclosure pairs are four times faster, supporting six Device Adapters and two HPFE connections over PCIe Gen 3 network, the fastest available in the industry.
Lastly, IBM simplified the licensing of software features into three bundles, based on TB total capacity of Fixed Block (FB) LUNs and Count-Key-Data (CKD) volumes:
IBM also provided a "Product preview", announcing plans for a third member of the DS8880 family in 2016 that will be flash-optimized to provide an all-flash, higher performance storage system model.
Comment (1) Visits (8554)
Next week, May 11-15, I will be in Las Vegas, Nevada for the [IBM Edge 2015 conference], covering IBM System Storage, z Systems and POWER Systems. Is this your first time going?
We have sold out, with over 6,000 registrants, that is way more than the 4,200 we had last year. If this is your first time to Edge, then I thought I would get some of my colleagues to help set some expectations.
So, I asked several of my colleagues a few questions, to help provide a variety of viewpoints. Here were my questions:
If you didn't get into Edge, we are going to have a LiveStream of some of the keynote sessions on our [Digital Event Center] that you can watch from the comfort of your home or office. Go to the [Registration page] for details.
I arrive this Sunday afternoon. If you see me, stop and say "Hi!"
technorati tags: IBM, #edge2015, #ibmedge, #ibmstorage, Ori Bauer, William Bostic, Bill Bostic, Harry Yudenfriend, Real-time Compression, FlashSystem, FlashSystem 900, FlashSystem V9000, DS8000, DS8870, z13 System, IBM Mainframe, FICON, zHPF, Fabric I/O Priority Management, NoSQL, IBM Almaden Research, Solution Center, VersaStack, Storwize, Tommy Rickard, Eric Stouffer, Ian Shave
Comment (1) Visits (12966)
Happy New Year everyone!
Well it's Tuesday again, and you know what that means? IBM Announcements!
(Update: I thought it was quite clever to announce the new z13 mainframe on January the 13th. A few [triskaidekaphobic] employees pointed out that certain [Greek and Spanish-speaking cultures] consider Tuesday the 13th to be an unlucky day. However, superstitious people should probably not work in IT, as it would be difficult for a worldwide company like IBM to avoid all the numbers that different cultures consider unlucky.)
IBM will have a live streaming event on Jan 14, Redefining Digital Business: The new generation of IBM z Systems], for those who want to hear the announcement in more detail. Here is what the invitation page has to offer:
You are cordially invited to join IBM on January 14 from 2:00pm to 4:30pm Eastern Standard Time (US) when IBM will share a whole new generation of IBM z Systems™ built to meet the needs of your digital business. Join us and learn how IBM z Systems are designed to:
At this live streaming event, you will hear from a remarkable group of business and technology leaders who will share success stories, best practices and the exciting technology innovations and capabilities of the new generation of IBM z Systems. Go to the Registration page] to participate.
But what does this really mean? Are you thinking BFD?
(Update: For those not familiar with IT acronyms, BFD refers to "Bigger, Faster, Denser" -- the trend in IT to announce new generations that are merely bigger, faster, and/or denser versions of the previous generations. Fortunately, the z13 takes up the same amount of data center floor space -- 2 floor tiles = 2 square meters = 20 square feet -- and weighs approximately the same as the z196 and zEC12, so raised floor struts do not have to be strengthened or reinforced to take in this new system.)
You may have noticed that we are now talking about "z System" instead of "System z". This change was made to line up with IBM's change to "POWER Systems" from "System p". Leadership felt that dropping the stodgy old zEnterprise and giving the mainframe a "hip" new name would attract new emerging digital workloads like Cloud, Analytics, Mobile and Social.
This is not the first time IBM has renamed products in a series. While the IBM mainframe just celebrated its 50th anniversary last year, the "13" refers to the 13th generation of CMOS-based mainframe technology introduced in 1994. Here is a quick table to show you the names that have evolved over the years:
(Note: This change also corresponds to a completely restructuring of IBM into business units, eliminating its former hardware and software groups. The design and development of all mainframe-related hardware, software and middleware will be consolidated under the IBM Systems business unit. I will wait for IBM's 4Q financial results announcement on or after January 20 before I cover this in any more detail.)
The z13 machine itself has some unique differences from previous generations. Instead of a "Multi-chip Module" (MCM) that contained multiple processor and storage controllers on a single slab, the z13 uses Single-Chip Modules (SCM) that are either a single 8-core processor, or a single system controller, allowing them to be field replaceable units (FRU).
Previous generations organized the processors in 1 to 4 vertical "books". The problem was that if you had a single book system, you bought a lot of hardware infrastructure designed to support a full four books. In the new design, processors are organized into horizontal Central Processor Complex (CPC) drawers, with additional hardware infrastructure provided per drawer. This makes the lower-end models more affordable. Each drawer has six processor SCMs and two system controller SCMs, providing 39 to 42 usable cores per drawer. Models ranges from 30 to 141 usable cores, with the option to upgrade from one model to another as your needs grow.
The z13 provides N-2 generation compatibility. This means you can have the z196, zEC12 and z13 all participate in the same Parallel Sysplex. You will also be able to upgrade your z196 or zEC12 to the new z13 system.
The new z13 can have up to 10TB of memory, and this can be assigned entirely to a single Logical Partition, or LPAR. The system can be subdivided up to 85 LPARs, versus 60 on the previous generation. Currently, z/OS v1 can only have up to 1TB per LPAR, and z/OS v2 can only go up to 4TB, so I suspect this 10TB is planning for future OS releases.
The new z13 now offers Simultaneous Multithreading [SMT]. Initially, this will double the number of threads for IFL engines (supporting Linux and z/VM), and zIIP engines supporting DB2, Java, XML and IPsec workloads. IBM is eliminating the zAAP engines, since zIIP engines can do all of that. The new [Preview z/OS v2.2] will take advantage of this SMT capability.
To assist with database, analytics and multimedia workloads, the z13 offers Single Instruction, Multiple Data [SIMD] capability. This allows a single instruction to perform the same update or action across many data fields.
For those clients with zBX models 2 and 3, allowing you to run POWER-based AIX and x86-based Microsoft Windows and Linux operating systems on your mainframe, they will be able to upgrade to [zBX model 4 for the z13 System]. Now that IBM has sold off its x86 server business to Lenovo, I suspect it will also phase out the zBX offerings as well.
To handle emerging workloads of Cloud, Mobile and other Web applications, IBM will offer a new stronger and faster Crypto Express5S cryptographic adapter. The z13 will enhance public key support for constrained digital environments using Elliptic Curve Cryptography (ECC) for users such as Chrome, Firefox, and Apple's iMessage. The z13 will also minimize reformatting of databases with new exploitation of VISA format preserving encryption (FPE) for credit card numbers.
The z13 also made some enhancements for Linux clients. The zAware analytics that analyzes internal traces and logs for z/OS has been extended to support Linux on System z. For those who want to use GDPS Business Continuity and Disaster Recovery services, but don't want to develop z/OS skills for the "K" system, there will now be a Virtual GDPS appliance that will run self-contained z/OS. Lastly, IBM has made a statement of direction that it will support open source Linux KVM as a Linux-only alternative to z/VM hypervisor. OpenStack will support both this new Linux KVM as well as z/VM 6.3 release.
The PCIe bus has been upgraded to Gen3 at 16Gbps, from Gen2 used in the zEC12. These can be used for Coupling Facility Links, which are faster than the legacy 6 Gbps InfiniBand, which are also supported for legacy migration. People with z196 and zEC12 can either carry forward their I/O drawers they have previously purchased, or move the PCiE Gen2 cards into the new Gen3 drawers.
The new z13 will also support 16Gb FICON, using the new FICON Express5S cards. Here is my segue into storage, as you are probably now wondering when I was going to get to the storage part of the announcement!
IBM is also announcing corresponding changes to the DS8870 firmware and accessories to go with the z13 System. This includes:
But don't just take my word for it, here are reviews of the new system from various journalists:
"They seem a computing odd couple: the mainframe, the old workhorse, and the smartphone, the cool-kid computer of today. But IBM has designed the latest version of the mainframe, which is being introduced on Wednesday, with the smartphone in mind. The new mainframe, the z13, has been engineered to cope with the huge volume of data and transactions generated by people using smartphones and tablets."
"One customer enthusiastic about such features is Citigroup Inc., a longtime IBM user that favors mainframes for both reliability and security. 'Security is in the DNA of the mainframe,' said Martin Kennedy, Citi's managing director for platforms and storage. Another factor shaping the bank's needs, Mr. Kennedy said, is the rising volume of transactions carried out using smartphones and other mobile devices. Mainframes are particularly good at combining data from a variety of systems and presenting them to a user's mobile app, he said."
"IBM is introducing a new mainframe in a bet that clients will need its souped-up speed and security to handle a surge in consumers using smartphones for everything from banking to checking health-care records. The z13 system can encrypt and analyze data in real time and process 30,000 transactions a second, International Business Machines Corp. (IBM) announced today. That means faster and safer transactions for consumers on mobile phones."
"With the unveiling of the z13, IBM has taken its MobileFirst Platform to deliver even better performance and security than before, as it incorporates the fastest microprocessor in the world, server processors that are twice as fast as existing products, 300 percent additional memory and 100 percent more bandwidth analytics speed. Last year, IBM formed a partnership with Apple to help bring Apple's iDevices to business customers to boost sales, with IBM providing cloud and mobile analytics support."
"'We're driving toward a world where more and more people are using mobile devices, or embedded devices, to interact with systems,' John Birtles, director of IBM z Systems, tells WIRED. 'We need to make sure that those devices are secure, that the transaction's secure, and that our clients get the level of analytics that gives them opportunities to improve their businesses.'"
IBM mainframes are used to process the majority of financial transactions around the world, is well positioned to handle Cloud, Analytics, Mobile and Social workloads. The IBM DS8000 series disk is the #1 market leader for disk storage on mainframe environments.
Comment (1) Visits (11090)
Last week, in my post [IT Support for the Holidays], I mentioned that I was scrubbing computers in preparation to give them to charity. A local reader asked if I would be willing to donate one of the computers to her kindergarten class. She teaches a class of 20 kids, at the very same elementary school that I went to when I was that age.
So here is the beefiest machine of the set.
Make/Model: Sony PCV-RC850 Processor: 2.4GHz Intel 32-bit RAM: 512MB Hard disk: 40GB Removable media: CD/DVD-ROM and CD/DVD-RW Keyboard/mouse: standard PS/2 Sound: headphone jack Ethernet port: 100Mbps USB ports: two
IBM likes grand challenges, like [Deep Blue computer] to play chess against Grandmaster Garry Kasparov, and the [Watson computer] to play against two experts on the game show Jeopardy! My "Kidergarten Desktop" challenge is certainly on a smaller scale--to install software on this machine that will neet the following requirements
The 512MB is not enough to run Microsoft Windows 7, but certainly enough to run some flavors of Linux. Inspired by this review of [Top 6 Linux Distributions for Children], I thought I would give a few a spin.
Many of these have Live
I had already scrubbed the [Windows XP] and replaced with [Linux Mint 12 LXDE]. Can I just install the Edubuntu-desktop on Linux Mint? While Linux Mint is Ubuntu-based, it is not binary compatible, so I will need to install fresh.
The [Edubuntu] LiveDVD requires 1GB of memory to try out, so to get this installed, I used the "Alternate Ubuntu 12.04" installer DVD.
Why 12.04 release of Ubuntu? The current release is 13.10 will only be supported for 9 months, and in keeping with "Requirement #3 Minimal Maintenance", the [Edubuntu team recommends installing a Long Term Support (LTS) release], and 12.04.3 is the most recent LTS that will be supported through 2017.
Edubuntu recommends 20GB of disk space to run, so I have partitioned the 40GB drive as follows:
For this machine, I will have three users configured:
Ubuntu's [Alternate Installer] uses basic graphic mode that can run in 512MB, and once installed, I was then able to install the Edubuntu Desktop and both preschool and primary-level educational software, to account for all learning ability levels of the children.
admin-$ sudo bash admin-# apt-get install edubuntu-desktop admin-# apt-get install ubun
I am not a big fan of Ubuntu's "Unity" panel on the left, and was hoping that Edubuntu-desktop would remove it, but no luck. so I removed it manually.
This system does not boot USB files natively, and getting Grub2 boot loader to boot ISO files was more difficult than I imagined. I was able to extract the necessary files over to sda2 hard disk to get them to work. I took "Clonezilla" full system backups to a separate SSH server over my local subnet.
Well, that's my start. Any suggestions? Has anyone done this before? Please enter comments below.
Comment (1) Visits (11797)
Wrapping up my week on All-Flash arrays, I thought I would cover some of the Enterprise Reliability features of the IBM FlashSystem.
On Monday, [IBM FlashSystem versus EMC XtremeIO all-Flash Arrays], I discussed some of the features of the IBM FlashSystem that differentiate it from EMC's ExtremeIO and other all-Flash arrays. On Tuesday, [IBM 2013 Storage Announcements for November 19] included discussion of the all-Flash model of the IBM System Storage DS8870 disk system.
Just as light bulbs burn out eventually after repeatedly being turned on and off, Flash does not last forever either.
A set of transistors can represent a single bit of informaiton (Single-level cell, or SLC for short), or multiple bits (Multi-level Cell, MLC). MLC typically refers to two bits, with a new "Triple-level cell" or TLC technology, able to store three bits per set of transistors.
SLC is faster and can endure more "Program-erase" write cycles, but MLC is less expensive to manufacture and therefore used in most consumer products, like digital cameras, smart phones, music players and USB memory sticks. To learn more on this, see this 6-page IBM whitepaper on [Comparison of NAND Flash Technologies Used in Solid-State Storage].
In between, "Enterprise MLC" (or eMLC for short) refers specifically to a different grade of chips IBM gets from the flash manufacturer. eMLC chips use a similar MLC bit arrangement, but are typically selected from higher bins, and most importantly have much longer program-erase cycle times which yield greater chip endurance, at the expense of long data retention when power is off (but seriously, when is anything off for very long in a data center?)
As a result, eMLC has 10x the endurance of regalar MLC, approaching parity with SLC at half the cost!
In the IBM FlashSystem, DRAM cache is used to buffer the writes first, then written out to the Flash. This helps to further improve the endurance.
For enterprise reliability, each Flash chip on the IBM FlashSystem has Error Correcting Codes (ECC), and then each set of 10 chips is placed in a 9+P RAID-5 configuration.
The chips are sub-divided into 16 planes. In the event a cell fails, the data for that plane can be reconstructed from parity, and written to spare space on the other planes of that same chip set. That plane is then reformated as an 8+P RAID-5, bypassing the failed plane.
In this manner, a cell failure only results in losing a small portion of one chip. If the same plane fails another failure on another chip, it will drop down to 7+P, 6+P, 5+P, and finally 4+P. This is known as "Variable Stripe RAID" or VSR for short.
IBM FlashSystem can survive over 1,000 such cell failures without an outage. By comparison, a single cell failure on an SSD often marks the entire drive as a failure.
But wait, there's more. Why stop at just RAID-5 across 10 chips. The chips are organized into modules, and IBM FlashSystem can perform RAID-5 across modules, in a 10+P+S RAID-5 configuration. This is referred to as "Two dimensional RAID" or 2D-RAID for short.
Even if you lost an entire module, the system will automatically rebuild on the spare module, and you can replace the bad one non-disruptively.
Many use cases for all-Flash arrays do not require such high levels of Enterprise reliability. Several of the all-Flash competitors have adopted a "des
The idea is to assume that the data stored on them is just a copy from some other storage media. In the event of a Flash failure, it can easily be restored from a mirrored copy or backup.
For the IBM FlashSystem, The newer 800 series are based on eMLC, ideal for the majority of business applications, databases and virtual machine images placed on all-Flash arrays. The older 700 series are based on more expensive SLC, designed specifically for sustained write-intensive workloads.
Within each series, the "tens" models (710, 810) offer RAID-0 striping across ECC and VSR protected modules. For higher levels of availability, the "twenties" models (720, 820) offer ECC, VSR and 2D-RAID protection.