Huh. This says that the TRIM option is set by default, and that this TRIM feature was introduced in Win 2008 R2.
Which means I shouldn't have to do anything for the Windows hosts and guest OSes, they should already be set. So that means I should just need to start in on the VMware script to free up the space (esxcli storage vmfs unmap -l <datastore>) I may not need to do anything. Anything that means less I have to do, I'm all for ... LOL On Thu, Feb 2, 2017 at 10:23 AM, Maglinger, Paul <[email protected]> wrote: > I hadn't heard of this so I started Googling around. I ran across this: > https://technet.microsoft.com/en-us/library/cc785435(v=ws.11).aspx > Not GPO, but possibly done with PowerShell? > > Paul > > -----Original Message----- > From: [email protected] [mailto:[email protected]] > On Behalf Of Michael Leone > Sent: Thursday, February 02, 2017 9:02 AM > To: [email protected] > Subject: [NTSysADM] Best way to implement TRIM/UNMAP on Win 2008 > > So we're migrating our SAN storage from an EMC VNX to an all-flash XtremIO > (ooh! ahhh! LOL). Anyway, EMC is telling us that all my hosts (a few > physical, most VMs) really need to use the TRIM/UNMAP feature, to actually > release deleted data, to reclaim space. My questions here are about Windows > hosts and guests; I will get to the VMware part later (pretty sure I can > release at the datastore level with a scheduled PowerCLI script). > > Win 2012 R2 has this enabled by default ("fsutil behavior query > disabledeletenotify"). But apparently Win 2008 R2 does not. > > Older Windows versions does not include automatic UNMAP support. Third party > tools can be used to reclaim space. > https://kallesplayground.wordpress.com/2014/04/26/storage-reclamation-part-2-windows/ > > OK, fine. So I need to run a utility to do that. EMC recommends the "sdelete" > utility from SysInternals. > > My questions: how best to do that on 80+ hosts, each of whom have multiple > disks? sdelete only works locally, right? I can't point it at a host (sdlete > \\that-host-there -z). > > So I guess I need some way to enumerate all the disks only on my Win > 2008 boxes, and then run "sdelete -z <drive letter>" on it. I'm guess I will > eventually need to do periodically, like as a scheduled task. > > Ideas, anyone? > >
