https://community.hpe.com/t5/disk-enclosures/disk-alignment-on-eva-arrays/m-p/4765159#M37262 VMFS-partitions are automatically aligned to 64KB if you use the VI/vSphere-client.<BR />VMDK-containers are aligned due to the VMFS blocksize.<BR />Guest-OS partitions are not always aligned - depends on the OS version.<BR /><BR />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).<BR /><BR />But it won't hurt if you do it anyway and then the guest is prepared if you migrate to another storage array.<BR /> Wed, 16 Mar 2011 10:36:36 GMT Uwe Zessin 2011-03-16T10:36:36Z https://community.hpe.com/t5/disk-enclosures/disk-alignment-on-eva-arrays/m-p/4765158#M37261 Hi anyone got any experience using disk alignment on EVA luns connected to ESX and Windows servers?<BR /><BR /><A href="http://frankdenneman.nl/2009/05/windows-2008-disk-alignment/" target="_blank">http://frankdenneman.nl/2009/05/windows-2008-disk-alignment/</A><BR /><BR />-inex<BR /> Mon, 14 Mar 2011 18:19:33 GMT https://community.hpe.com/t5/disk-enclosures/disk-alignment-on-eva-arrays/m-p/4765158#M37261 inex 2011-03-14T18:19:33Z https://community.hpe.com/t5/disk-enclosures/disk-alignment-on-eva-arrays/m-p/4765159#M37262 VMFS-partitions are automatically aligned to 64KB if you use the VI/vSphere-client.<BR />VMDK-containers are aligned due to the VMFS blocksize.<BR />Guest-OS partitions are not always aligned - depends on the OS version.<BR /><BR />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).<BR /><BR />But it won't hurt if you do it anyway and then the guest is prepared if you migrate to another storage array.<BR /> Wed, 16 Mar 2011 10:36:36 GMT https://community.hpe.com/t5/disk-enclosures/disk-alignment-on-eva-arrays/m-p/4765159#M37262 Uwe Zessin 2011-03-16T10:36:36Z