Tony Pearson is a Master Inventor and Senior IT Architect for the IBM Storage product line at the
IBM Systems Client Experience Center in Tucson Arizona, and featured contributor
to IBM's developerWorks. In 2018, Tony celebrates his 32th year anniversary with IBM Storage. 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.
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Continuing my coverage of the 27th annual[Data Center Conference], the weather here in Las Vegas has been partly cloudy,which leads me to discuss some of the "Cloud Computing" sessions thatI attended on Wednesday.
The x86 Server Virtualization Storm 2008-2012
Along with IBM, Microsoft is recognized as one of the "Big 5" of Cloud Computing. With theirrecent announcements of Hyper-V and Azure, the speaker presented pros-and-cons between thesenew technologies versus established offerings from VMware. For example, Microsoft's Hyper-Vis about three times cheaper than VMware and offers better management tools. That could beenough to justify some pilot projects. By contrast, VMware is more lightweight, only 32MB,versus Microsoft Hyper-V that takes up to 1.5GB. VMware has a 2-3 year lead ahead of Microsoft, and offers some features that Microsoft does not yet offer.
Electronic surveys of the audience offered some insight. Today, 69 percent were using VMware only, 8 percent had VMware plus other, including Xen-based offerings from Citrix,Virtual Iron and others. However, by 2010, the audience estimated that 39 percent would be VMware+Microsoft and another 23 percent VMware plus Xen, showing a shift away from VMware'scurrent dominance. Today, there are 11 VMware implementations to Microsoft Hyper-V, and thisis expected to drop to 3-to-1 by 2010.
Of the Xen-based offerings, Citrix was the most popular supplier. Others included Novell/PlateSpin,Red Hat, Oracle, Sun and Virtual Iron. Red Hat is also experimenting with kernel-based KVM.However, the analyst estimated that Xen-based virtualization schemes would never get past8 percent marketshare. The analyst felt that VMware and Microsoft would be the two dominant players with the bulk of the marketshare.
For cloud computing deployments, the speaker suggested separating "static" VMs from "dynamic" ones. Centralize your external storage first, and implement data deduplicationfor the OS load images. Which x86 workloads are best for server virtualization? The speaker offered this guidance:
The "good" are CPU-bound workloads, small/peaky in nature.
The "bad" are IO-intensive, those that exploit the features of native hardware
The "ugly" refers to workloads based on software with restrictive licenses and those not fully supported on VMs. If you have problems, the software vendor may not help resolve them.
Moving to the Cloud: Transforming the Traditional Data Center
IBM VP Willie Chiu presented the various levels of cloud computing.
Software-as-a-Service (SaaS) provides the software application, operating system and hardware infrastructure, such as SalesForce.com or Google Apps. Either the software meets your needs or it doesn't, but has the advantage that the SaaS provider takes care of all the maintenance.
Platform-as-a-Service (PaaS) provides operating system, perhaps some middleware like database or web application server, and the hardware infrastructure to run it on. The PaaS provider maintains the operating system patches, but you as the client must maintain your own applications. IBM has cloud computing centers deployed in nine different countries across the globe offering PaaS today.
Infrastructure-as-a-Service (IaaS) provides the hardware infrastructure only. The client must maintain and patch the operating system, middleware and software applications. This can be very useful if you have unique requirements.
In one case study, Willie indicated that moving a workload from a traditional data center to the cloud lowered the costs from $3.9 million to $0.6 million, an 84 percent savings!
We've Got a New World in Our View
Robert Rosier, CEO of iTricity, presented their "IaaS" offering. "iTricity" was coined from the concept of "IT as electricity". iTricity is the largest Cloud Computing company in continental Europe, hosting 2500 servers with 500TB of disk storage across three locations in the Netherlands and Germany.
Those attendees I talked to that were at this conference before commented that this year's focus on virtualization and cloud computing is noticeably more than in previous years. For more on this, read this 12-page whitepaper:[IBM Perspective on Cloud Computing]
Continuing this week's coverage of the 27th annual [Data Center Conference] I attended some break-out sessions on the "storage" track.
Effectively Deploying Disruptive Storage Architectures and Technologies
Two analysts co-presented this session. In this case, the speakers are using the term "disruptive" in the [positive sense] of the word, as originally used by Clayton Christensen in hisbook[The Innovator's Dilemma], andnot in the negative sense of IT system outages. By a show of hands,they asked if anyone had more storage than they needed. No hands went up.
The session focused on the benefits versus risks of new storage architectures, and which vendors they felt would succeed in this new marketplace around the years 2012-2013.
By electronic survey, here were the number of storage vendors deployed by members of the audience:
14 percent - one vendor
33 percent - two vendors, often called a "dual vendor" strategy
24 percent - three vendors
29 percent - four or more storage vendors
For those who have deployed a storage area network (SAN), 84 percent also have NAS, 61 percent also have some form or archive storage such as IBM System Storage DR550, and 18 percent also have a virtual tape library (VTL).
The speaker credited IBM's leadership in the now popular "storage server" movement to the IBM Versatile Storage Server [VSS] from the 1990s, the predecessor to IBM's popular Enterprise Storage Server (ESS). A "storage server" is merely a disk or tape system built using off-the-shelf server technology, rather than customized [ASIC] chips, lowering thebarriers of entry to a slew of small start-up firms entering the IT storage market, and leading to newinnovation.
How can a system designed for now single point of failure (SPOF) actually then fail? The speaker convenientlyignored the two most obvious answers (multiple failures, microcode error) and focused instead on mis-configuration. She felt part of the blame falls on IT staff not having adequate skills to deal with the complexities of today's storage devices, and the other part of the blame falls on storage vendors for making such complicated devices in the first place.
Scale-out architectures, such as IBM XIV and EMC Atmos, represent a departure from traditional "Scale-up" monolithic equipment. Whereas scale-up machines are traditionally limited in scalability from their packaging, scale-out are limited only by the software architecture and back-end interconnect.
To go with cloud computing, the analyst categorized storage into four groups: Outsourced, Hosted, Cloud, and Sky Drive. The difference depended on where servers, storage and support personnel were located.
How long are you willing to wait for your preferred storage vendor to provide a new feature before switching to another vendor? A shocking 51 percent said at most 12 months! 34 percent would be willing to wait up to 24 months, and only 7 percent were unwilling to change vendors. The results indicate more confidence in being able to change vendors, rather than pressures from upper management to meet budget or functional requirements.
Beyond the seven major storage vendors, there are now dozens of smaller emerging or privately-held start-ups now offering new storage devices. How willing were the members of the audience to do business with these? 21 percent already have devices installed from them, 16 percent plan to in the next 12-24 months, and 63 percent have no plans at all.
The key value proposition from the new storage architectures were ease-of-use and lower total cost of ownership.The speaker recommended developing a strategy or "road map" for deploying new storage architectures, with focus on quantifying the benefits and savings. Ask the new vendor for references, local support, and an acceptance test or "proof-of-concept" to try out the new system. Also, consider the impact to existing Disaster Recovery or other IT processes that this new storage architecture may impact.
Tame the Information Explosion with IBM Information Infrastructure
Susan Blocher, IBM VP of marketing for System Storage, presented this vendor-sponsored session, covering theIBM Information Infrastructure part of IBM's New Enterprise Data Center vision. This was followed by BradHeaton, Senior Systems Admin from ProQuest, who gave his "User Experience" of the IBM TS7650G ProtecTIER virtual tape library and its state-of-the-art inline data deduplication capability.
Best Practices for Managing Data Growth and Reducing Storage Costs
The analyst explained why everyone should be looking at deploying a formal "data archiving" scheme. Not just for "mandatory preservation" resulting from government or industry regulations, but also the benefits of "optional preservation" to help corporations and individual employees be more productive and effective.
Before there were only two tiers of storage, expensive disk and inexpensive tape. Now, with the advent of slower less-expensive SATA disks, including storage systems that emulate virtual tape libraries, and others that offer Non-Erasable, Non-Rewriteable (NENR) protection, IT administrators now have a middle ground to keep their archive data.
New software innovation supports better data management. The speaker recalled when "storage management" was equated to "backup" only, and now includes all aspects of management, including HSM migration, compliance archive, and long term data preservation. I had a smile on my face--IBM has used "storage management" to refer to these other aspects of storage since the 1980s!
The analyst felt the best tool to control growth is the "Delete" the data no longer needed, but felt that nobody uses Storage Resource Management (SRM) tools needed to make this viable. Until then, people willchose instead to archive emails and user files to less expensive media.The speaker also recommended looking into highly-scalable NAS offerings--such as IBM's Scale-Out File Services (SoFS), Exanet, Permabit, IBRIX, Isilon, and others--when fast access to files is worth the premium price over tape media.The speaker also made the distinction between "stub-based" archiving--such as IBM TSM Space Manager, Sun's SAM-FS, and EMC DiskXtender--from "stub-less" archive accomplished through file virtualization that employes a global namespace--such as IBM Virtual File Manager (VFM), EMC RAINfinity or F5's ARX.
She made the distinction between archives and backups. If you are keeping backups longer than four weeks, they are not really backups, are they? These are really archives, but not as effective. Recent legal precedent no longer considers long-term backup tapes as valid archive tapes.
To deploy a new archive strategy, create a formal position of "e-archivist", chose the applications that will be archived and focus on requirements first, rather than going out and buying compliance storage devices. Try to get users to pool their project data into one location, to make archiving easier. Try to have the storage admins offer a "menu" of options to Line-of-Business/Legal/Compliance teams that may not be familiar with subtle differences in storage technologies.
While I am familiar with many of these best practices already, I found it useful to see which competitiveproducts line up with those we have already within IBM, and which new storage architectures others find mostpromising.
Well, it's Wednesday, day three at the [Data Center Conference] here in Las Vegas, Nevada. Unlike other conferencesthat concentrate all of their keynote sessions at the front of the agenda,this conference spread them out over several days. They had three on Tuesday, two more Wednesday, and the last one on Thursday. Here are my thoughts on the two keynote sessions on Wednesday.
Top 10 Disruptive Technologies affecting the Data Center
The analyst presented his "top ten" technologies to watch:
Storage Virtualization - I was glad this made top of the list!
Cloud Computing - IBM was recognized for its leadership in this space. Cloud computing brings together new models of acquisition, billing, access, and deployment of new technology.
Servers: Beyond Blades - Currently, distributed servers have fixed CPU, memory and I/O capability, as manufactured at the factory, but what if you can re-assign these resources dynamically? New technologies mightmake this possible.
Virtualization for desktops - not just hosted virtual desktops, the speaker proposed having"portable personalities" that an employee might carry around on a CDrom or USB memory stick, andthen use whatever computer equipment was nearby.
Enterprise Mashups - You know analysts have too much time on their hands when they come up withtheir own eight-layer reference architecture for enterprise adoption of Web 2.0 technologies.
Specialized Systems - These are sometimes called heterogeneous systems, hybrids, or application-specific appliances. Unlike general purposes servers, these are more difficult to re-purpose as your needs change. However, if done right, can provide better performance for specific workloads.
Social Software and Social Networking - A survey of the audience found 18 percent were alreadyusing Mashups in the enterprise, but 65 percent haven't looked at this at all. Because traditionalhierarchically-organized companies can't re-structure their employees fast enough, the use ofsocial software to develop "virtual teams" and "communities of interest" can be an effective wayto get the "wisdom of crowds" from your employees. Rather than just installing this kind of software, the speaker felt it was better to just "plant seeds" and let social networks grow withinthe enterprise.
Unified Communications - Do you use different providers or software for cell phone, land line, wi-fi, internet, Instant Messaging (IM), audio conferencing, video conferencing, and email? The promise of Unified Communications is to bring this all together.
Zones and Pods - In the 1990s, traditional design for data centers tried to anticipate growthover the next 15-20 years, and build accordingly. These did not foresee all the changes in IT.The new best practice is a "pod approach" where you only build what you need for the next 5 to 7years, with the architecture to expand as needed. A traditional 9000-square-foot data center thatsupports 150 "watts-per-square-foot" would cost over $20 million to build, and over $1 million inelectricity every year. A pod alternative might cost less than $12 million to build, and nearlycut electricity costs in half.
Green IT - rapid "green" improvements are being demanded on IT operations, not just forpolitical correctness, but also for cost savings. A survey of the audience found 7 percentwilling to pay a premium price for green solutions, and another 26 percent willing to pay aslightly higher price for green features and attributes.
Don McMillan, Computer Engineer turned Stand Up Comic
Don gave a hilarious look at the IT industry. While most comics that are often hired to entertainthe audience have only a layman's knowledge of what we do, Don has a masters degree in ElectricalEngineering from Stanford and worked at a variety of IT companies, including AT&T Bell Labs andVLSI Technology. You can see more of his bio on his[Technically Funny] Web site.
Here's Don in a [four-minute video] demonstrating the kind of observational humor he performs.
It's good to see a bit of humor at IT conferences. With the pressures of IT staff and managementto manage explosive growth with shrinking budgets, the attendees appreciated the mix of serious with the not-so-serious.
The title of this post is inspired by Baxter Black's [latest book]. Rathera recap of the break-out sessions, I thought I would comment on a fewsentences, phrases or comments I heard in the afternoon and evening.
Stop buying storage from EMC or NetApp
The lunch was sponsored by Symantec. Rod Soderbery presented "Taking the cost out ofcost savings", explaining some ideas to reduce IT costs immediately.
First, he suggested to "stop buying storage" from EMC or NetApp that charge a premiumfor tier-one products. Instead, Rod suggested that people should "think like a Web company"and buy only storage products based on commodity hardware to save money, and to use SRM software to identify areas of poor storage utilization. IBM's TotalStorage Productivity Center softwareis often used to help with this analysis.
His other suggestions were to adopt thin provisioning, data deduplication, and virtualization.The discussion at my table started with someone asking, "How do we adopt those functions without buying new storage capacity with those features already built-in?" I explained that IBM's SAN Volume Controller (SVC),N series gateways, and TS7650G ProtecTIER virtual tape gateway can all provide one or moreof these features to your existing disk storage capacity.
IBM and HP are leaders in blade servers
In the session "Future of Server and OS: Disappearing Boundaries", the audience confirmedby electronic survey that IBM and HP are the leaders in blade servers, although blades representonly 8-10 percent of the overall server market.
Interestingly, 22 percent of the audience has deployed both x86 and non-x86 (POWER, SPARC, etc.) blade servers.The presenters considered this an interesting insight.
Another survey of the audience found that 3 percent considered Sun/STK as their primary storagevendor. One of the presenters was delighted that Sun is still hanging in there.
IBM Business Partners deliver the best of IBM and mask the worst
Elaine Lennox, IBM VP, and Mark Wyllie, CEO of Flagship Solutions Group, Inc. presentedIBM-sponsored back to back sessions. Elaine presented IBM's vision, the New Enterprise Data Center, and the challenges that demand a smarter planet.
Mark focused on his company's experience working with IBM through Innovation Workshops. Theseare assessments that can help someone identify where you are now, where you want to be, andthen action plans to address the gaps.
Cats and Dogs, Oil and Water, Microsoft Windows and Mission-critical applications, what do all of these have in common?
NEC Corporation of America sponsored some sessions on some x86-based solutions they have to offer.The first part, titled "Rats Nests, Snow Drifts and Trailers" focused unified storage, andthe second part, presented by Michael Nixon, focused on how to bring Microsoft Windows servers into the data center for mission-critical applications.
The Economy might be slowing, but storage is still growing
Two analysts co-presented "The Enterprise Storage Scenario". Unlike computing capacity, thereis no on/off switch for storage, not from applications nor from end-users. The cost ofpower for storage is expected to be 3x by 2013. Virtual servers, includingVMware and Microsoft's Hyper-V will drive the need for shared external disk storage.A survey of the audience found 20 percent were expecting to purchase additional storagecapacity 4Q08.
When someone reaches age 52, they expect to coast the rest of their career
At dinner with analysts, the discussion of financial meltdown and bailouts is unavoidable,including everyone's views about the proposed bailout of the Big 3 automakers. I can'tdefend Ford, GM and Chrysler paying their people $70 US dollars per hour, when their UScounterparts at Toyota or Honda are only paid $45 to $50 dollars per hour.
However, I have a close friend who retired after 20 years working for the fire department,and a cousin who retired after 20 years serving in the Navy (the US Navy, not the BolivianNavy), and both are still in their forties in age. A long time ago, IT professionalsretired after 30 years, in some cases with 50 to 60 percent of their base pay as theirpension for the rest of their lives. A 52-year-old that has worked 30 years might expect to enjoy the rest of his old age playing golf and pursuing other hobbies. This is not "coasting", it is called "retirement". The few of my colleagues that I have seen who worked 35 to 40 years did so becausethey enjoyed the challenge of work at IBM. They enjoyed solving tough engineering problems and helping customers.As long as they were having fun on the job,IBM was glad to keep their wealth of experience on board and actively engaged.
Unfortunately, many people rely on their own investments in the stock market for retirement, ratherthan company pensions. With the current financial crisis, I suspect many people my age arereconsidering their previous retirement plans.
We're going to need more trains!
I took the monorail back to my hotel. The ride includes funny announcements and statistics,including this gem:
"Since 1940, Las Vegas has doubled in population every ten years, which means thatby the year 2230, we will have over 1 trillion people calling Las Vegas home. We're goingto need more trains!"
That wraps up Tuesday, Day 2 of my attendance here! Now for some sleep.