January 29, 2012

Alas, VMware, Whither HDS?

Where is HDS in VMware's roadmap?

If VMware aims to transform storage presentation, and is working with major storage vendors to make it happen, HDS ought to be part of it. Their history, technology, and market position earn them a spot in the “VAAI Cabal” and their omission was a bombshell to industry-watchers like me.

FalconStor Brings VAAI Support To Every Storage Array

FalconStor NSS 7.0 brings VMware VAAI support to any storage array

I do not necessarily endorse or recommend FalconStor NSS over competing products from more familiar names, but I commend them for adding VAAI support. There the first small vendor to do so, and their software virtualization platform spreads the availability of this important software capability.

VMware PSP and SATP in Plain English

VMware's PSA is awash in abbreviations and options

I am often questioned during my Storage for Virtual Environments seminar presentations about VMware’s Pluggable Storage Architecture (PSA). This system is fairly straightforward and concept: VMware provides native multipathing support for a variety of storage arrays, and allows third parties to substitute their own plug-ins at various points in the stack. But the profusion of acronyms and third-party options makes it difficult for end-users to figure out what is going on.

Back From the Pile: Interesting Links, April 8, 2011

This regular series features highlights from the week. Read my thoughts concerning HDS following their “blogger day” in London. Also, my good friend W. Curtis Preston announced more Backup Central Live! dates; you really ought to go see him!

Concerning HDS

Where is HDS in VMware's roadmap?

I’ve been following the progress of Hitachi Data Systems (HDS) for well over a decade. When I participated in high-end enterprise storage system shootouts as an end-user, HDS routinely placed second against EMC, HP and NetApp in the, and the decision was always a close one. But the storage market has changed, with nimble startups innovating around established competitors and industry giants flexing their marketing muscles.

Back From the Pile: Interesting Links, March 25, 2011

This regular series features highlights from the week.
A special video message for NerdBlurt and #HDSday folks …
Evolving vs. Arriving
Cisco’s CleanAir vs the Atheros vendors
MetaGeek – Gestalt IT Wireless Tech Field Day
Hands on with the Metageek Wi-Spy DBx

VMware VAAI Storage Array Support in Plain English

The most exciting enhancements in VMware vSphere 4.1 is the addition of vStorage API for Array Integration (VAAI). This new API allows VMware ESX to offload storage processing functions to capable storage arrays, reducing the workload on the server hardware in introducing new and exciting possibilities for performance and efficiency. VAAI in ESX 4.1 includes three separate capabilities: block zeroing, full copy, and hardware assisted locking.

Granularity of Thin Provisioning Approaches

Although I consider it the main stumbling block for thin provisioning, communication (or lack thereof) is being addressed with metadata monitoring, WRITE_SAME, the Veritas Thin API, and other ideas. But communication isn’t the only issue. Let’s talk about page sizes. You’ll often see vendors tossing this “softball” objection at their competitors, claiming that their (smaller) page size makes for more-effective thin provisioning. And that’s true, to a some extent.

Is TRIM Useful For Thin Provisioning?

If WRITE_SAME can be a semaphore for thin un-provisioning, what about TRIM? It sounds like a perfect fit, and has wider implementation to boot! Let’s take a deeper look.

Commodity Hardware Always Wins

Get used to it: Commodity hardware like this Super Micro SBB server will dominate enterprise storage

The history of technology moves in fits and starts, but one trend trumps all else: An inevitable shift from fine-tuned specialized gear to general-purpose commodity building blocks. We see it in both hardware and software, and at all levels of the industry, from chips and wafers to operating systems and networking devices. Take a step back and you’ll certainly agree: Commodity hardware always wins (eventually).