Just over three months after releasing Update 2 for ESX 3.5, VMware has released Update 3. That last Update brought major storage changes like VSS support, hot VMFS extension, Storage VMotion across Fibre Channel and iSCSI, and support for 10 Gb Ethernet and 8 Gb FC support.

For more information on Update 2, see my article, Storage Fixes in VMware ESX Server 3.5 Update 2.

Update 3 is not as important from a storage perspective, but there are some goodies in there:

• New VMDK recovery tool (nifty!)
• Storage tweaks like fixed multipathing on IBM SVC, interrupt coalescing on QLogic 4 Gb FC HBAs, and some bug fixes
• Expanded support for SATA (but not for VMFS), SAS, and some Broadcom NICs (but still no TOE)

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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…

VMware just released Update 2 for VMware ESX Server 3.5 (Virtual Infrastructure), and it includes some storage fixes of note:

1. Support for Volume Shadow Copy Service (VSS) for filesystems Windows Server 2003 and Windows Server 2008 guests.  This means VMware services like VCB and SRM can now signal Windows Server to quiesce filesystems before creating a clone or snapshot and is a major addition!
2. Windows Server 2003 guests also get application quiescing, where supported.
3. You can now extend a live, running VMFS volume as storage is added, just like Windows Vista and 2008 guests could already do with raw device mode (RDM).  Note that this only works for flat disks with no persistent snapshots open.

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