I've a Windows 2008 R2 virtual server running inside VMware ESXi 5.0. The server is also running Microsoft SQL Server 2008 R2. Backups are being done by Acronis vmProtect 7.0.
I'm experiencing a problem where after a backup is completed by Acronis, all the clients that are connected to the database(s) on the SQL server lose their connections and require a restart. An example timeline goes as follows (all times taken from the "Recent Tasks" window in vSphere):
- Acronis backup of virtual machine starts at 07:35:40 and completes at 07:36:11
- Remove snapshot starts at 07:40:38 and completes at 07:49:08
It is at the instant the snapshot removal completes (07:49:08) that the connection to the SQL server is momentarily lost (I'm going to call this a "hiccup" in the rest of this narrative).
I've a couple other Windows 2008 R2 virtual servers that are running SQL Server 2008 R2 that are being backed-up using the same Acronis application, but they don't experience any "hiccup". I've tried moving the virtual machine to a different host, I've tried changing the time that the backup runs and I've tried moving the virtual drives to a different datastore, but nothing made any difference.
The server in question is mission-critical - we're a Public Service Access Point (PSAP) and must be up 24/7/365. Having the emergency dispatch client lose its connection to the database in the middle of a 911 call is unacceptable - but it has happened.
Anyone have any ideas as to what might be causing the "hiccup"?
Thanks.
Message was edited by: John Burski This question is, for all intents and purposes, answered (I just can't figure out how to mark it as "answered").