Last week, I lauded Symantec for introducing an API in Storage Foundation which will interact with the thin storage capabilities of supported arrays. Since then, I’ve learned more about this capability, and I am writing this update to share that knowledge. As I noted last week, the press release was a bit hard to follow and comprehend (and not just for me), and one of my initial assumptions about the API turned out to be wrong. I also received a few comments from interested folks pointing out some more pros and cons of this technology.

First, let’s clarify just which products and capabilities Symantec is offering here:

• Veritas Storage Foundation version 5.0MP3 for Unix/Linux includes SmartMove and the Thin Reclamation API
• Veritas Storage Foundation for Windows 5.0 only includes SmartMove at this point, but it will be updated to include Thin Reclamation at some point in the coming year

Although there is no real information on Symantec’s web site about all this yet, Symantec’s director of Storage Management and High Availability, Sean Derrington, assures me that their software is available now. Although no compatible arrays are in end-user hands, 3PAR will update their T-Class firmware to support the API shortly, and HDS and HP are on the way as well. Continue Reading »

This is part of an ongoing series of longer articles I will be posting every Sunday as part of an experiment in offering more in-depth content.

Many storage challenges focus on correlating high-level uses of data (such as applications) with the nuts and bolts of storage infrastructure. These discussions often revolve around the conflict between data management, which demands an ever-smaller unit of management, and storage management, which benefits most from consolidation. Developing data management capability that is both granular enough for applications and scalable enough for storage is one key to the future of storage.

Continue Reading »

This is part of an ongoing series of longer articles I will be posting every Sunday as part of an experiment in offering more in-depth content.

Although many discussions in the storage industry focus on the relative merits of one protocol or another, the conversation occasionally turns to the core issue at hand: We continue to patch together a system based on outdated concepts. Most storage protocols continue to mimic direct attached storage, and most of our so-called networks act as point to point channels. An ultra-modern virtualized storage infrastructure with all the latest bells and whistles still holds the concepts of block and file at its core. Whenever the storage industry has tried to bring about real storage management they have been stymied by a lack of context for data.

No amount of virtualization, and no new protocol, will fix this. Put simply, we need a storage revolution. Continue Reading »

3PAR just introduced their third-generation storage hardware, bringing a novel feature to the world of thin provisioning: Hardware-assisted “zero-detection” to convert standard storage to thin provisioning. Although only certain special-case users will benefit from this technology, it’s nice to see someone working on one of the pitfalls of the technology - that it’s really hard to convert from “fat” to thin, let alone to un-provision storage.

Continue Reading »

TechTarget recently uploaded three podcast versions of my SAN School series from Storage Decisions last year.  These are audio-only, but I might be able to dig up the accompanying slides.  If you’re interested in this, please leave a note below or contact me through email.

So without further ado, I present three lessons on SAN storage:

• SAN School Lesson One: Building a SAN - In this first lesson of SAN School, I discuss the different types of storage arrays, switches, and software that make up a storage network.
• SAN School Lesson Two: SAN Architecture and Topology - In lesson two, I discuss the evolution of SANs from standalone entities, to islands and beyond. Discover techniques that can make a substantial difference in the way data is moved and processed, as well as in your company’s consolidation plans.
• SAN School Lesson Three: SAN Management and Security - In this Podcast, I explain what the options are for management tools. I cover array management, change management, virtualization and more to help you manage your environment. 

Real Video: Where the SAN Stands

Curious about the current state of SAN technology?  Stephen Bigelow of TechTarget interviewed me (last summer) about SAN options, and the video is now live on their BitPipe site.

Topics covered include combined iSCSI and FC SANs, ups and downs of modular storage and oversubscribed switches, next-generation SAN management applications, storage virtualization, and best practices for SAN design.

Here’s a snip - the three best practices for SAN design are as follows:

1. Choose reliable high-quality hardware
2. Build dual redundant networks
3. Protect management interfaces

Watch the whole video (it’s 17 minutes long) and let me know what you think!

OK, so let me get this straight. A recent study in the UK shows that 94% of IT managers in the UK regularly buy more storage than they need, 38% of all storage is unused, and 69% find storage management increasingly difficult. Yet only 44% feel that they shouldn’t have to do this? What’s wrong with the other half? Are they happy buying more storage than they need?

I know, it’s just a study, and studies are flawed. I’ve done enough myself to know that it is difficult to ask the right questions to get clear answers. I do question these results though. Especially the “38% unused” number - my own surveys revealed a much higher number than this. But I guess if storage management is increasingly difficult, it’s also just as difficult to get good utilization numbers…