Hi Scott. VSC 4.1 supports "shimmed" or aligned datastores with NFS, but for initial deployments we're requiring a PVR (basically special permission so we can track who's using it). Your NetApp SE can get this for you, then you'll get the information to activate the feature.
Not that moving the VM into a shimmed or offset datastore doesn't actually fix the VM - it basically uses a datastore that is offset by the same amount as the VM, but in the opposite direction (or 8's complement if you like). With VMFS, the LUN is offset. With NFS, there's a feature in which files with certain extensions get offset in the WAFL volume.
If you move a VM into a datastore with a different offset (or no offset and the VM itself was never realigned), the I/O will be misaligned again.
I hope this helps!
Peter
-----Original Message----- From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Scott Eno Sent: Monday, February 04, 2013 11:42 AM To: Toasters Subject: VSC 4.1 & Online alignments
Hi,
We're trying to get some VM's aligned in our NFS-based VMware environment using the "online" alignment tool packaged in VSC. Since we are NFS, the tool needs a VMFS datastore to use to align the VM. When we run the tool and it moves the VM to the VMFS datastore, the VM no longer shows up as misaligned.
However, if we move the VM back to an NFS datastore, it shows up as misaligned again.
So, is this a one-way trip? NFS --> VMFS, but that VM can never go back? _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters