Hi
We are using Hyper-V on Server 2012, we have 4 nodes in a cluster and the machines are kept on clustered storage.
During some maintenance on one of our SQL servers I noticed that the VM had been snapshotted way back in January 2014. This has led to some very large snapshots.
The VM has 3 disks - an OS disk (running Server 2008R2 with SQL Server 2008R2), a disk for the DBs and a disk for the SQL transaction logs. ALL disks have large (70GB+) snapshots against them.
I don't know why this machine was snapshotted - I don't remember ever doing it myself (and certainly from experience using VM Ware Snapshots in the past steer well clear of these things).
My main concern is not only are they large snapshots but the VM is a busy SQL server. We migrated from VM Ware a year ago and I have never used Hyper-V snapshots, a bit of research shows up what I would expect (don't use for production unless necessary, don't use for DB/AD/Exchange servers etc).
So my question to the community is what course of action should I take? Delete the snapshots and hope for the best?
Our DBs are backed up every 15mins and the OS is replicated offsite so if it went wrong then recovery is possible (but not painless!)
Does anyone have any experience of such a situation?
Any advice greatly appreciated!