I have been recommended by several other users on this mailing list to use inside the vm snapshots, vmware snapshots, and then use zfs snapshots. I believe I understand the difference between filesystem snapshots vs block level snapshots, however since I cannot use vmware snapshots (all LUNs on the SAN are mapped to ESXi using RAW disk in physical compatibility mode, which then disables vmware snapshots) does this cause me to have a weaker backup strategy? What else can I do? Should I convert the virtual machines from physical compatibility to virtual compatibility in order to get snapshotting on the ESXi server?
Thanks for all the helpful information! Greg On Wed, Jan 13, 2010 at 9:12 PM, Gregory Durham <gregory.dur...@gmail.com>wrote: > Haha, Yeah that's tomorrow, I have a test vm I will be testing on. I shall > report back! Thank you all! > > > On Wed, Jan 13, 2010 at 8:26 PM, Fajar A. Nugraha <fa...@fajar.net> wrote: > >> On Thu, Jan 14, 2010 at 6:40 AM, Gregory Durham >> <gregory.dur...@gmail.com> wrote: >> > Arnaud, >> > The virtual machines coming up as if they were on is the least of my >> > worries, my biggest worry is keeping the filesystems of the vms alive >> i.e. >> > not corrupt. >> >> As Tim said, The snapshot disk are in the same state they would be in >> if you pulled the power plug. >> This is also the same thing you got BTW if you use LVM snapshot (on >> Linux) or SAN/NAS based snapshots (like NetApp) >> >> > In the case of exchange, I have exchange itself on a raw lun in physical >> > compatibility mode, and I have 2 LUNs mounted with the Server 2008 iSCSI >> > initiator for logs and the exchange DB. >> >> Most modern filesystem and database have journaling that can recover >> from power failure scenarios, so they should be able to use the >> snapshot and provide consistent, non-corrupt information. >> >> So the question now is, have you tried restoring from snapshot? >> >> -- >> Fajar >> > >
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