Home > Uncategorized > Great FREE tool for VM file system alignment

Great FREE tool for VM file system alignment

This is big IMO. One of the “vSpecialists” at EMC (a technical team in the field that focuses on evangelizing EMC-VMware integration) has just released a FREE tool that can correct file system alignment in your VMware environment.  Note: The tool is not limited to just EMC customers.

File system alignment is a problem that exists for many folks. It lurks in the background causing excessive disk I/O on the arrays of those who are unbeknownst to its existence. In smaller shops, it may not be a huge deal if you’re not pushing a lot of IOPS, although I would still recommend doing it just to avoid performance challenges later.

An excerpt from the announcement:

“The idea of creating this came from the lack of a decent free alignment tool out there for VMware admins. Most every other one at there was either something you had to purchase or you had to be a customer of the vender to get access to it. And even after getting access these tools were either (in my opinion) limited in what they did, how they did it, or had become obsolete in a console-less vSphere 5 architecture.

For those they don’t know, alignment with Virtual Machine disks on top of Storage Arrays has been a performance issue for a long time. I won’t go into long detail explaining the problem or the benefits to alignment. There are great posts by Duncan (http://www.yellow-bricks.com/2010/04/08/aligning-your-vms-virtual-harddisks/) and Kevin(http://www.blueshiftblog.com/?p=300) on what the issues are and some of the tools available.”

Get a copy of the tool here:

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