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Tony Pearson is a Master Inventor, Senior IT Architect and Event Content Manager for [IBM Systems for IBM Systems Technical University] events. With over 30 years with IBM Systems, Tony is frequent traveler, speaking to clients at events throughout the world.
Lloyd Dean is an IBM Senior Certified Executive IT Architect in Infrastructure Architecture. Lloyd has held numerous senior technical roles at IBM during his 19 plus years at IBM. Lloyd most recently has been leading efforts across the Communication/CSI Market as a senior Storage Solution Architect/CTS covering the Kansas City territory. In prior years Lloyd supported the industry accounts as a Storage Solution architect and prior to that as a Storage Software Solutions specialist during his time in the ATS organization.
Lloyd currently supports North America storage sales teams in his Storage Software Solution Architecture SME role in the Washington Systems Center team. His current focus is with IBM Cloud Private and he will be delivering and supporting sessions at Think2019, and Storage Technical University on the Value of IBM storage in this high value IBM solution a part of the IBM Cloud strategy. Lloyd maintains a Subject Matter Expert status across the IBM Spectrum Storage Software solutions. You can follow Lloyd on Twitter @ldean0558 and LinkedIn Lloyd Dean.
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Continuing my coverage of the [IBM Edge2014 conference], IBM's premiere conference for System Storage and related products, here are my notes from the morning of Day 1.
IBM Storage Trends and Directions
Clod Barrera, IBM Chief Technical Strategist for IBM System Storage, and Axel Koester, IBM Chief Technologist and Executive IT Specialist for IBM System Storage, co-presented the first session of the conference.
Nearly all storage users are struggling with the combined effects of significant capacity growth, data as both an asset and potential liability, and the lack of staff and expertise to exploit new technology.
In addition to [Systems of Record], representing the traditional workloads of databases and on-line transaction processing (OLTP), we are now seeing [Systems of Engagement], which represent new workloads such a mobile apps, social business, and big data analytics.
We are now at a tipping for Flash. IBM FlashSystem can perform I/O in about 100 microseconds, which is roughly 10x faster than solid state drives (SSD), and 50x faster than spinning disk. For those clients who value performance, this can easily justify its use.
Take for example an IBM Power system running DB2 PureScale application with 43,000 transactions per second, including 13,000 updates per second, that result in 1.3 million IOPS to the back-end storage. This can be accomplished with either (a) all-disk 5,000 spinning disk spindles, (b) hybrid 2,500 spinning disk spindles combined with 128 solid state drives (SSD), or (c) IBM FlashSystem.
The comparisons are astounding. The IBM FlashSystem solution is 11x less expensive then the hybrid system, and 14x less expensive than the all-disk solution. The solution also uses 26x less energy, and 80x less space in the data center.
Clod also feels that Software Defined Storage has come of age. IBM has three offerings in this area. The first, code-named Elastic Storage, represents IBM's General Parallel File System (GPFS) and GPFS-based products like SONAS and Storwize V7000 Unified. The second is the IBM SmartCloud Virtual Storage Center and Storwize family of storage hypervisors. The third is IBM XIV Storage System.
Software Defined Storage can be used in private, hybrid and public clouds. In 2013, only 22 percent of storage was Cloud, but this is expected to grow to 50 percent by 2017.
IBM will support a range of Software Defined Environments, from the highly proprietary VMware, to the open source OpenStack foundation. Where applicable, IBM will provided added value above and beyond the basic OpenStack infrastructure.
Axel Koester presented storage futures. He works closely with IBM Research and described some of the projects they are working on:
120PB file system solution that involved a grid of IBM POWER 775 servers. Instead of traditional RAID, the system used GPFS Native Raid, which offers an 8+3 Reed Solomon protection scheme.
Multi-cloud storage that allows you to access storage from multiple public providers without having the bottleneck of a single master scheduler.
Phase Change RAM (PCRAM) which does not rely on capturing an electrical charge. This will be 12x faster than PCIe Flash, and 275x faster than consumer SSD.
Liquid state storage. Rather than solid state, metal is kept in its liquid state to store binary information.
Finally, he mentioned IBM Research's success at storing a single bit of information in just 12 atoms. To do this, the folks at Almaden Research Center had to manually move the atoms into place using the needle of a scanning tunneling microscope [STM] to nudge each atom into position.
Axel gave a great example of scale. An atom compared to a tennis ball is like a tennis ball compared to the entire planet Earth. If an atom was the size of a tennis ball, the point of the STM needle would be the size of Mount Everest, but upside down.
IBM's Smarter Storage Strategy
In previous years, my session on Storage Strategy was scheduled on Wednesday or Thursday, and attendees would comment "Why wasn't this sooner in the week? Everything makes more sense now!"
This time, I was featured immediately after Clod and Axel's keynote session, resulting in hundreds of attendees in a large standing-room-only ballroom. The session was repeated Thursday morning for those who were turned away.
IBM's storage strategy has three main themes.
First, IBM is focused on data-intensive solutions such as big data analytics. This means storage needs to be efficient to manage the growth in a cost-effective manner. IBM offers real-time compression and data deduplication to be capacity-efficient, Flash, Nearline drives and tape to be energy-efficient, and extremely easy-to-use graphical user interfaces and automation to be labor-efficient.
Second, IBM wants to optimize business critical workloads. IBM wants to eliminate the manual effort needed to balance between performance versus cost. IBM Easy Tier, I/O priority manager, and FlashSystem solutions are just a few examples.
And third, IBM wants to help you start quickly, and add value, by deploying private, public and dynamic hybrid cloud environments. IBM is not limiting its solutions to just VMware, but rather supporting other server hypervisors including KVM, Hyper-V, PowerVM and z/VM. IBM is a platinum sponsor for OpenStack foundation, and IBM storage systems support Cinder interfaces.
For those on Twitter, my handle is @az990tony and the hashtag for this event is #IBMEdge.
When IBM designed the DS8870, it changed the bulk power supplies and batteries used in the previous DS8800 model to highly energy-efficient [DC-UPS]. In addition to reducing the overall energy consumption of the DS8870, it also gave the engineers space above the units to put 4U of standard 19-inch rack equipment.
The High Performance Flash Enclosure provides an ultra-dense and ultra-high-performance option. Each HPFE can delivers up to 250,000 IOPS and up to 3.4 GB/s bandwidth.
Up to thirty 387 GB Enterprise Multi-Level Cell (eMLC) flash cards provide up to 11.6 TB of raw capacity, about 9.2 TB usable, in only 1U of 19-inch rack space. A pair of very powerful integrated SAS RAID engines manage RAID-5 across the flash cards. The HPFE attaches directly to GX++ slots in the two DS8870 POWER7+ controllers, rather than using the Device Adapter (DA) loops.
You can have up to four of these HPFE in the "A" frame of your DS8870. Each HPFE can have either 16 or 30 flash cards. For 16 cards, you would have two spare plus two 6+P RAID-5 ranks. For 30 cards, you would add another two 6+P RAID-5 ranks.
Easy Tier Enhancements
Easy Tier is IBM's market-leading sub-volume automated tiering inside the DS8870 disk system. There were several enhancements in this announcement.
The first enhancement is to "Easy Tier Server", a feature that coordinates caching of active blocks of data inside the server's own internal Flash. This had supported Power Systems with EXP30 Ultra drawers, and now expanded to support IBM [Flash Adapter 90].
The second enhancement is to the three-level (Flash,Enterprise,Nearline) tiering algorithm. Inside the DS8870, the new HPFE flash cards will be part of the "Flash Tier" along with solid state drives (SSD) attached to the DA loops. Internal inter-tier load-balancing will take into account the faster nature of the flash cards in the HPFE, and move the busiest blocks accordingly. We we refer to this as "micro-tiering" within the Flash Tier.
Broader Solid State Drive options
Not everybody likes the 400GB solid state drives IBM offered for the DA loops, so IBM is now offering a smaller 200GB and a larger 800GB options as well.
Enhanced Concurrent Code Load
The new DS8870 R7.3 firmware release drastically cuts the activation time of concurrent code load in half.
Nobody likes warmstarts either. These are a necessary evil for some error conditions, but the clever engineers upstairs have figured out ways to reduce the number of warmstarts and eliminate the need to perform a warmstart after certain events to prevent any application impact to the attached host.
Multi-Target Remote Mirror
By now you know that IBM has the market-leading remote mirroring services for high-end disk systems, using less bandwidth and maintaining better concurrency than high-end systems from other vendors.
The DS8870 R7.2.7 firmware release can now support multi-target remote mirror. In previous releases, if you wanted three-site disaster recovery, you relied on Metro/Global Mirror, where site "A" had a Metro Mirror to a bunker site "B", and then site "B" had a Global Mirror to site "C". Not everybody liked this.
Some clients have asked for a "star" configuration, where "A"-to-"B" and "A"-to-"C" are independent of each other. A SCORE request is available for the following configurations:
Two Metro Mirror
One Metro Mirror and one Global Copy
Two Global Copy
While Metro Mirror can support up to 300km distance, and Global Copy can go any distance around the planet, there is no reason why you can't have one or both copies in the same building, or on campus nearby, for use with HyperSwap.
OpenStack Cinder interface support
Last but not least, the DS8870 now offers full support for OpenStack Havana and Icehouse releases. Support is provided through the OpenStack Cinder driver currently available for download. IBM is a platinum sponsor of the OpenStack foundation.
International Technology Group [ITG] has just published a series of papers about IBM SmartCloud Virtual Storage Center (VSC) and SAN Volume Controller/Storwize storage hypervisor virtualization technology detailing the cost benefit advantages over EMC and VMware.
IBM delivers up to 72% lower storage TCO than EMC storage virtualization and management solutions in large enterprises ... and up to 35% lower storage TCO than VMware tools in mid-sized environments
Also, you can watch an interview with the study's author, International Technology Group Managing Director, Brian Jeffery, live from next week's IBM Edge Conference in Las Vegas. Brian will be interviewed on [TheCUBE by Wikibon] on Monday afternoon. Watch it live on May 19!
I will be at Edge next week. If you plan to be there, I would be glad to discuss these ITG findings with you and your clients in person.
Jamie Thomas, IBM General Manager of Storage and Software Defined Environments
Jamie announced [IBM Elastic Storage], a new offering that is available as a software defined storage solution, based on IBM's General Parallel File System (GPFS) technology already deployed at 45,000 installations.
IBM Elastic Storage provides a global name view across data center locations. It can manage up to a Yotabyte of information, combining Flash, disk and tape resources. It supports OpenStack interfaces, Hadoop and standard POSIX file system conventions.
IBM Elastic Storage provides automated tiering to move data from different storage media types. Infrequently accessed files can be migrated to tape and automatically recalled back to disk when required. Unlike traditional storage, it allows you to smoothly grow or shrink your storage infrastructure without application disruption or outages.
IBM Elastic Storage software can run on a cluster of x86 and/or POWER-based servers, and can be used with internal disk, commodity storage, or advanced storage systems from IBM or other vendors.
IBM partnered with various clients in different industries in a special beta program. Jamie led a client panel to discuss their experiences with IBM Elastic Storage:
Alan Malek, Director of IT, Cypress Semiconductor.
"Total cycle time is key". Over the past 31 years, they bought whatever file storage was available. Now, with IBM Elastic Storage, the performance was very consistent for their engineering workloads with full load balancing.
Russell Schneider, Principal Storage Consultant, Jeskell.
Russell's company works with a lot of federal agencies, "Big Data has become Bigger Data". For example, research on Global Warming and Climate Change requires a large amount of storage across agencies.
In another example, when the tsunami hit Japan a few years ago, an agency here in the USA realized they had 14PB of data stored as a single copy in a data center at sea level less than a mile from the coast. They realized they needed to have a secondary copy, and an option to cache to a third location depending on regional disasters.
Matthew Richards, Products, OwnCloud.
For those not familiar with OwnCloud, it provides a Dropbox-like file sharing service, but in the Enterprise, with on-premise storage. It has been fully tested and certified with IBM Elastic Storage to provide a secure file sharing platform.
With IBM Elastic Storage, they were able to scale linearly up to 20,000 users, and are now testing 100,000 users. The need to have intelligent access to files at scale is what Matthew likes about IBM Elastic Storage.
Dr. Michael Factor, IBM Distinguished Engineer at IBM Research
Michael started out explaining there are three areas for storage: block, file and object. The fastest growing type of data is unstructured fixed content with associated metadata. This is ideal for object storage. Michael has been working with OpenStack Swift, an open source interface defined for object storage. He defined "storlets" as follows:
Storlets extend an object store by moving computation to the data -- filtering, transforming, analyzing -- instead of bringing data to the computation.
Storlets have been deployed on a variety of European Union research projects. For example, in partnership with Phillips, a pathology storlet can count the number of cancer cells in an image. By bringing the computation to the data, it eliminates having to transfer large amounts of data over the network.
Storlets can run on-premise and on IBM's SoftLayer IaaS cloud offering.
Bruce Hillsberg, IBM Director of Storage Systems at IBM Research
Bruce led another panel discussion, this time of IBM storage experts:
Vincent Hsu, IBM Fellow and CTO of Storage.
The problem is the isolation of data into "storage silos". Isolation causes problems in managing large amounts of data at scale, and costs more as storage is not fully utilized. IBM Elastic Storage brings everything together, eliminating storage silos.
Michael explained how IBM works with clients all over the world to ensure that storage solutions meet client requirements. For example, storlets can be used to use rich metadata to manage photographs, and display them based on GPS satellite location, or other content that makes it easier to manage these images.
IBM Elastic Storage will support OpenStack Cinder and Swift interfaces. IBM is a platinum sponsor of OpenStack foundation, and is now its second most prolific contributor, with hundreds of full-time employees working on this.
Tom Clark, IBM Distinguished Engineer, Chief Architect, Storage Software, Cloud & Smarter Infrastructure.
Storage Management is a critical piece of Software Defined Storage. This is done in three ways:
The use of analytics to optimize the deployment of storage, based on workload requirements. Storage admins set policies, and then IBM Elastic Storage analytics gather metrics and then optimize data placement and movement based on these policies. IBM Elastic Storage has 70 percent lower TCO that competitive offerings.
The focus on backup services. Backups are not just for data protection, but rather can be used to duplicate or replicate data for testing, for training, and for other purposes. IBM Elastic Storage is fully supported by IBM Tivoli Storage Manager.
Being able to support Hybrid Cloud environments, where some data can be on-premise, and other data off-premise. Storage Management challenges will need to deal with this possibility. IBM Elastic Storage is well positioned for this.
Carl Kraenzel, IBM Distinguished Engineer, Director of Watson Cloud Technology and Support.
Watson is ground-breaking technology, and IBM Elastic Storage technology was at the heart of the Watson that was first introduced in 2011.
To consider IBM Elastic Storage based on lower-cost and higher-scalability is not the full picture. Rather, this is an important platform for Cognitive Computing, which we are just at the tip of the iceberg in exploring. IT systems need to be aware of the context of what we are doing.
While the Grand Challenge demonstration on Jeopardy! was exciting, it is time we stop playing games and apply IBM Elastic Storage to business, to help with health care and medical research, and other problems in society. IBM has already deployed this at Anderson Cancer Center and Memorial Sloan Kettering Cancer Center, for example.
Tom Rosamilia provided closing remarks. IBM Elastic Storage is not just for new workloads in Cloud, Analytics, Mobile and Social (CAMS) but also traditional workloads as well. IBM Elastic Storage provides "data democracy" and allows for "better rested storage administrators" that make fewer mistakes.
Tom opened the floor for questions from the audience:
Q1. Data integrity, not just security but also quality? IBM Elastic Storage has end-to-end data integrity checking built-in.
Q2. How does IT transition from full control to auto-pilot? IBM allows you to tap into existing storage. This is not rip-and-replace. With storage virtualization, IBM hides the complexity that normally requires full control over specific assets.
Q3. Storage admins would rather have a root canal without Novocaine than move their data. What is IBM doing to offer automation to help storage admins move to this new infrastructure? IBM storage virtualization breaks that hard link between applications and specific storage devices. IBM Elastic Storage eliminates application downtime previously associated with data movement.
Tom Rosamilia assured the audience that IBM is fully committed to its storage portfolio. IBM Elastic Storage is not just about the profoundness of what IBM announced today, but also where IBM is investing in the future of storage.
Marking the occasion, here is an important letter from our Vice President, Laura Guio:
May 6, 2014
To Whom it may concern
Subject: ProtecTIER Development Update:
This year marks the sixth anniversary of IBM's acquisition of Diligent Technology. Over the past six years IBM has emerged as a leader in enterprise class data deduplication. Our highly scalable, dual node hardware redundancy and gateway design are unique characteristics in the industry. IBM fundamentally believes in the importance of cost saving data deduplication technology and continues to enhance our solution, improve value and increase investment protection for our installed base.
First, it is important to note what IBM has done most recently. IBM is among the first to integrate flash technology along with deduplication to boost performance and lower cost. Integration of the IBM FlashSystem 840 for metadata was completed the day the system was publically announced. The speed of technology integration is a result of our flexible gateway design which simplifies technology adoption. It also is enabled by our global development team providing a 24x7 system design, product test and integration environment.
Secondly, IBM has recently released ProtecTIER Mainframe Edition which enables the same enterprise class deduplication capability now for IBM System z. Another distinctive feature of ProtecTIER is its ability to sustain high throughput for both read and write operations. Most deduplication methodologies have an inherent read performance penalty. Since mainframe tape operations are much more read intensive than distributed systems, we were one of the first to market with a practical deduplication offering for all mainframe tape applications.
That's just what we've done getting out of the starting blocks in 2014. Our development team continues to enhance ProtecTIER. We're also working on refreshing the entire ProtecTIER product line with new model enhancements. A new gateway design is underway which will improve performance of the existing DD5. We expect this to be available as an upgrade, providing investment protection for existing ProtecTIER clients. The SM2 product family is also being redesigned to extend its capacity range. Along with hardware changes, we will widen the disk support matrix offering enhanced flexibility and new levels of price performance.*1*
We expect 2014 to be a busy year for IBM deduplication. We have development facilities around the world in Europe, North America, Central America and Asia, working on ProtecTIER. IBM continues to market, sell, and support ProtecTIER as our strategic offering for cost-reducing deduplication technology. Any suggestion that ProtecTIER is fading away is wishful thinking by our competitors. We are working to expand our markets as we have demonstrated by our recent introduction of ProtecTIER into the mainframe. Furthermore, we are looking to expand the use cases for ProtecTIER, which can now be attached as a NAS file system, to other areas besides pure backup. We're excited about what we are delivering today and where we can provide leadership by leveraging deduplication for customer storage environments.
Vice President, Business Line Executive Storage Systems
IBM Systems and Technology Group
*1*: IBM's statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM's sole discretion. The development, release, and timing of any future features or functionality described for our products remains at our sole discretion.
To learn more about IBM ProtecTIER, consider attending the [IBM Edge conference], May 19-23, 2014 at the Venetian Hotel in Las Vegas. I'll be there to explain Data Deplication technology as part of my "Data Footprint Reduction" presentation!
Before dinner, I was able to catch up with my colleagues from across the pond. Here I am pictured with Ola Surowiec, a Power Systems sales specialist from Scotland.
The dinner was set up as self-service buffet style, with choices of European, Asian, and Middle Eastern cuisine. This is largely the heritage of the Ottoman empire to provide a fusion of flavors from its neighbors.
The city of Istanbul is considered the border between Europe and Asia, with one side of the city on the "European" side, and the other side of the Bosphorus strait being the "Asian" side.
With a population of over 14 million, Istanbul forms one of the largest urban agglomerations in Europe, second largest in the Middle East and the third-largest city in the world by population within its city limits.
The entertainment started with two [belly dancers], one male and one female. (IBM is an equal opportunity employer!) For those not familiar with this particular form of performance art, it is improvised folk dances based on torso articulation and abdominal movements.
I have seen dancers before in Egypt, the country that most people associate with the origin of belly dancing, but the Turkish version is considered more energetic and athletic. Certainly both of our dancers were quite flexible.
This was followed by a live cover band that played the latest English-language hits. Several Americans at the table asked "Wait? We come all the way to Turkey and the local band sings the songs in English?"
In the corner, attendees were invited to dress up as their favorite sultan to take photograph. Here for example, are some of the members of the STU event team. Mo McCullough, Don Meyer, Marlin Maddy, Glenn Anderson and Alex Abderrazag pose with two lovely local ladies in full costume.
The word "sultan" derives from the Arabic word meaning "strength", "authority" or "power". Sultans ruled the Turkish empire from 1299 to 1922.
The [Topkapi palace], where I visited earlier in the week, contains clothing on display of the sultans and princes from the second half of the 15th century to the early 20th century.
New Generation Storage Tiering: Less Management, Lower Investment and Increased Performance
This was not just an update to my session last year in Brussels, Belgium. Rather, I decided to start over and focus I/O density as the metric to focus my efforts, armed with real data from Intelligent Storage Tiering Analysis (ISTA) studies done at various clients. From that, I was able to talk about storage tiering on three fronts:
Storage tiering between Flash and disk. IBM FlashSystem and IBM Easy Tier on DS8000 and Storwize family for hybrid Flash-and-disk configurations.
Storage tiering between disk and tape. HSM and Information Lifecycle Management (ILM) on SONAS, Storwize V7000 Unified and LTFS-EE.
Storage tiering automation across your entire environment. ISTA studies can help identify a target mix of Tier 0, Tier 1, Tier 2 and Tier 3 storage. SmartCloud Virtual Storage Center can recommend or perform the movement of LUNs to more appropriate tiers, based on age and I/O density measurements.
Next Generation FlashSystem 840 and V840, Architecture Deep Dive
Detlef Helmbrecht, from the IBM Advanced Technical Skills team in Germany, presented this deep dive in our latest IBM FlashSystem offerings. He started with an analogy. Latency is like a single car driving down an empty highway. IOPS, on the other hand, is like a lot of cars stuck in slow traffic, with all lanes filled on the autobahn. While there are more cars transported on a full highway, the individual cars are not driving very fast. Flash versus disk has similar comparisons.
Detlef explained the differences between the previous FlashSystem 810/820 with the new 840, as well as talk about the FlashAdapter 90 now available as a PCIe card.
Finally, we talked about SAN Volume Controller combined with Flash, and the new FlashSystem V840 which combines SVC and FlashSystem 840 to have an incredibly function-rich, robust solution.
Data Footprint Reduction - Understanding IBM Storage Efficiency Options
My last session of the week! This session covered all of the various technologies for data footprint reduction, including Thin Provisioning, Space-efficient FlashCopy and snapshots, Real-time compression and data deduplication. Frankly, I wasn't expecting many people to attend the last session of the last day, but nearly 50% of the seats were filled, so I was quite pleased on the turn-out.
Fun Fact: Istanbul is considered by TripAdvisor in 2014 as the #1 most popular city to visit in Europe!
Johann Weiss, Jim Blue and I joined several other local experts to answer questions and respond to comments and suggestions attendees had about IBM System Storage products and solutions. Here is a sample:
I would like to add 1TB of Flash to our FlashSystem 810 and have the system automatically re-stripe across this new capacity non-disruptively?
How can I have XIV systems at two datacenters in an active/active configuration that would allow me to vMotion from one location to the other non-disruptively?
Put them behind the SAN Volume Controller in Stretched Cluster mode.
What about a similar active/active but for NAS?
IBM N series.
I would like HyperSwap on the SVC/Storwize family like the DS8000 offers for AIX?
When will IBM offer a multi-frame XIV?
The "Hyper-Scale" set of features lets you logically connect 144 XIV frames together and treat as a single system. There is no need to physically bolt them together, since the communication is done over standard network switches.
When will IBM devices have native FCoE support?
All IBM System Storage products work within an FCoE framework today, either with native FCoE support, or through Top-of-Rack switches splitting out the traffic between IP and FCP traditional networks. IBM Storwize and N series products support FCoE natively, and any disk behind virtualized by SAN Volume Controller or Storwize can be access via FCoE hosts because of this support.
What is FLAPE?
FLAPE is the combination of Flash and Tape. Both of these technologies are improving over 40 percent year-to-year, but disk is slowing down to 20 percent improvement. It is possible to combine Flash and tape systems, such as IBM LTFS-EE or IBM ProtecTIER TS7600 series.
Only the Storwize V7000 Unified supports file modules to add NAS capabilities, what can IBM offer us that is smaller for NAS deployments, perhaps a Storwize V5000 Unified or Storwize V3700 Unified?
Consider the IBM N3000 series.
Other storage vendors indicate that RAID-5 and RAID-6 are running out of steam, are no longer practical to protect ever growing capacities of disk. What is IBM planning in this area?
IBM XIV Storage System was one of the first to offer a distributed RAID that addresses many of the RAID-5/RAID-6 drive rebuild concerns. IBM DCS3700 and DCS3860 also have Dynamic Disk Pooling to reduce drive rebuild impact. Lastly, IBM GPFS now offers Native RAID support, used in the IBM GPFS Storage Server.
Is it true that GPFS is NFS only?
Do not confuse GPFS the file system with the various storage offerings that are based on GPFS. IBM SONAS and Storwize V7000 Unified, both based on GPFS, support CIFS, NFS, HTTPS, SCP and FTP. IBM GPFS Storage Server can be configured to access GPFS natively, or you can run NFS v3/v4 server to make those protocols available. With Microsoft [Windows Storage Server], you can provide CIFS access to any GPFS-based storage solution.
LTFS-EE sounds like an exciting alternative to IBM Tivoli Storage Manager HSM space management for moving data from disk to tape. Do you agree?
Yes, we agree. However, TSM HSM space management supports a broader set of file systems. LTFS-EE only provides disk-to-tape movement for IBM GPFS.
Why does the DS8000 implementation of Easy Tier sub-LUN automated tiering support three tiers, but SVC/Storwize only support two tiers?
The same software engineering team works on both, but develop new features for the DS8000 first, get it working, then port it over to the Storwize family. At times, there might be gaps between what is supported on the latest DS8000 version and what is available on Storwize family products.
In an SVC Stretched Cluster, I would like to have the third quorum disk connected over the IP network, rather than FCP.
Personally, I enjoy these interchanges. They are sometimes called "Birds-of-a-Feather" or BOF at some conferences, "Free-for-All" at others. At IBM conferences, they are often titled "Meet the Experts". Whatever you call it, the questions and feedback on what clients are thinking are quite useful for product planning and prioritization of future planned features.