Stephen Foskett, Pack Rat

My webinar on building a business case for email archiving was very well-attended, so I was not able to get to everyone during the question and answer section. Since the questions were really excellent, I thought I would include them (and my responses) here.

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There is nothing like presenting in the ballroom at the Hilton Chicago!

Storage Decisions returns to New York later this month, and I’ll be happy to be there. Although the Hilton New York isn’t as grand as the Chicago venue pictured, it’s still a great location and a better event!

This time around, I’ll have two sessions:

• Tuesday, September 23, at 1:45 PM is my Deep Dive Into Email Archiving Products, where I delve into my eleven essential attributes of email archiving and spill the beans about the real product differentiators
• Wednesday, September 24, at 2:45 I’ll be presenting Everything You Always Wanted to Know About Virtualization-In One Hour, a super-condensed version of my one-day storage virtualization seminar (just add water!)

If you haven’t yet decided to attend, please do consider applying for admission at TechTarget’s site.

On the other hand, if you’re planning to be there, please drop by and say hello! I’ll be around the exhibit hall on Tuesday evening, and will have my tail glued to an ask-the-experts chair on Wednesday through lunch.

I’ll be in Charlotte for my storage virtualization seminar in October, with another Storage Decisions in San Francisco coming up in November!

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.

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News today is that powerhouse IT publisher, The Register, has snapped up storage industry reporting up and comer, Blocks and Files. Included in the deal is amusing editor/writer Chris Mellor and the back catalog of editorials. Left to rot are the sponsored (?) advertorials and regurgitated press releases. B&F will become a new storage-focused Register section. I imagine Chris’ trademark snarky wit will be quite welcome under the vulture mascot.

(how’d I do, Chris?)

I get the same questions all the time: Should I buy X or Y? Is Z better than Q? But as much as it sounds like a cop-out, I always answer, “well, this sounds like a cop-out, but that depends on what you’re doing with it…”

Now EMC’s Chuck Hollis has (bravely) stuck his neck out to try to actually compare the capacity efficiency three storage arrays in a realistic way. Good luck, Chuck! I can hear the knives sharpening over at NetApp and HP already!

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One of the new features in Xen 3.3, released this week, caught my eye: Paravirtualized SCSI (PVSCSI), which allows a guest OS to directly interact with a SCSI (or Fibre Channel) HBA. This should allow more specialized applications to be virtualized in Xen environments that use SCSI or FC storage without requiring the addition of a dedicated physical storage port per guest.

PVSCSI gives virtual machines direct access to SCSI and FC HBAs, and plays nicely with NPIV (Xensummit diagram by Fujitsu)

Functionally similar to VMware’s Physical Compatibility Mode for Raw Device Mode (RDM) volumes, PVSCSI enables certain applications that require direct SCSI communication to function in a virtual environment. Examples include Oracle RMAN, backup applications, and potentially SAN management software.

PVSCSI plays nicely with N_Port ID Virtualization (NPIV), too, so you don’t need to assign a physical HBA port to each guest - they can all share a port or two, and each would have his own N_Port on the Fibre Channel fabric.

In their Xensummit presentation about PVSCSI, Fujitsu showed impressive performance numbers, demonstrating that the technology doesn’t cause much of a performance hit even though it is substantially more complicated than the alternative approaches. I do wonder how PVSCSI managed to outperform Dom0 with 128k writes, but let’s chalk that up to insignificant variations in timing…

Now if only Xen would update the (3.2-era) readme files on their download page!

Do you know that need email archiving but just can’t get the project off the ground? I’ll be presenting a one-hour webinar called “Getting Your (Email Archiving) Project Approved” next Wednesday, August 27 at 1 PM Eastern time.

The session is presented by Mimosa, but the content is independent, so you won’t hear me pitch log shipping or trashing other vendors. Instead, I’ll focus on the benefits and beneficiaries of email archiving and how to make this critical technology a priority for the business, not just IT.

If you would like to attend, please register for the session at On24.

With Windows Server 2008 appearing in (surprisingly) 2008, and Windows 7 (client) scheduled for 2010, some folks grew mighty confused about the possibility of a Windows 7 Server appearing shortly thereafter. Even Microsofties talked about something called “Windows 7 Server” in blogs, newsgroups, and conferences.

So would there be a major Windows Server update just two or three years after the last major version? And what impact would this have on the masses that still haven’t moved from Windows Server 2003 (or even 2000)?

Thankfully, the Group Product Manager for Windows Server, Ward Ralston, has clarified the issue. There will be no Windows 7 Server. Instead, we will see an update to Windows Server 2008 called (unsurprisingly) Windows Server 2008 R2 which will incorporate any server-side enhancements needed for Windows 7 clients. Ralston’s comments about a 2/4 schedule of minor/major updates leads me to assume that the next major Windows Server update will come in 2012 at the earliest and will probably share whatever the post-Windows 7 client codebase becomes.

See the official Microsoft Windows Server Roadmap for more details, and note that Windows Storage Server 2008 is noted for release this year. I can’t wait to get my hands on that!

Although it’s been available for a while now, Windows Server 2008’s storage changes aren’t widely reported. TechTarget’s Dave Raffo wrote a piece about it today, Windows Server 2008’s hidden storage features, including some quotes from me, but it’s still less than clear.

So let me sum up:

1. Server Message Block (SMB) 2.0 is probably the biggest news.  Microsoft re-worked this protocol for Vista and 2008 to reduce chattiness, combine multiple commands in a single packet, and allow larger packets.  This should improve performance for just about everyone, but is only in those two operating systems right now.
2. The excellent multi-path I/O (MPIO) driver from Microsoft is also included right out of the box, including device-specific modules for both iSCSI and Fibre Channel.  This is the first version of Windows to come with MPIO, though it’s available with the iSCSI initiator and OEM drivers for other versions.
3. As in Vista, Server 2008 allows you to shrink NTFS filesystems on the fly.  It’s not quite as flexible or forgiving as some third-party tools, but it’s certainly easy to use!  Just go into the disk administrator snap-in and try it for yourself.
4. Windows finally has the option to leave new LUNs alone instead of trying to mount them.  This was one of those things that gave Windows a rep as a bad neighbor in SAN environments.
5. NTBackup is gone, replaced by a new Server Backup MMC snap-in.  I haven’t tried it, but I hope it’s better than the one that comes in Vista!  I ended up keeping NTBackup around on my laptop…
6. A new MMC snap-in called Storage Explorer lets you manage WMI-compliant SAN devices.
7. The Volume Shadow Copy Service (VSS) and DFS interfaces are improved and are now scriptable.
8. Server 2008 now automatically aligns filesystem boundaries with storage, which was one of those dark and secret skills us storage guys used to share amongst ourselves.  This can increase performance in high-I/O environments.
9. NTFS (in both Server 2008 and Vista) now has symbolic link support, just like UNIX and Mac OS X.  Note that this got mangled in the TechTarget article.
10. NTFS was also tuned and tweaked a bit for better stability and crash recovery.

As I mentioned on Monday, VMware’s Update 2 for ESX 3.5 includes support for 8 Gb Fibre Channel HBAs. This is an important development, so I went looking through the official ESX I/O Compatibility Guide to see which HBAs in particular were supported, but none were listed.

This was pretty puzzling, but Rich from VM /ETC and Duncan from Yellow Bricks were right - they just hadn’t updated the guide yet (even though the revision date was July 25).

So without further ado, the announcement:  You can now use Emulex and QLogic 8 Gb Fibre Channel HBAs with VMware ESX to give blazing I/O performance right where it’s needed.  Of course, 8 Gb storage arrays remain rare, but this will change soon.

An end-to-end 8 Gb FC SAN will likely provide all the performance of 10 Gb FCoE, and it’s available now instead of 2009 or 2010.  10 Gb iSCSI and NFS are also supported as of Update 2 if you’re more of a TCP/IP person…