Disk Arrays
cancel
Showing results for 
Search instead for 
Did you mean: 

Disk alignment on EVA arrays

inex
Super Advisor

Disk alignment on EVA arrays

Hi anyone got any experience using disk alignment on EVA luns connected to ESX and Windows servers?

http://frankdenneman.nl/2009/05/windows-2008-disk-alignment/

-inex
1 REPLY
Uwe Zessin
Honored Contributor

Re: Disk alignment on EVA arrays

VMFS-partitions are automatically aligned to 64KB if you use the VI/vSphere-client.
VMDK-containers are aligned due to the VMFS blocksize.
Guest-OS partitions are not always aligned - depends on the OS version.

HP claims that alignment is not necessary for EVA virtual disks (there was one exception for VRAID-5 data on older EVA-3000/5000 vdisks).

But it won't hurt if you do it anyway and then the guest is prepared if you migrate to another storage array.
.