07-21-2010 11:29 PM
07-22-2010 12:58 AM
07-22-2010 11:26 PM
07-23-2010 04:50 AM
09-05-2010 09:07 AM
11-12-2010 05:40 PM
I received the same error when backing up a remote Exchange 2010 DAG:
0xe000ff12 - A communications failure has occurred with an Exchange Store resource.
Final error category: Resource Errors
I struggled for three days with this. My backup server is Windows 2008 R2 with BE2010 R2. I found that I was able to backup DAS/SAN storage; however, when running a backup across the network the job would fail with the above error.
I tried a backup to disk and found that this worked which puzzled me a bit and led me down the path of checking the driver versions of the tape library and drives. Once I ascertained that these were OK I looked at the NICs. My server is a Dell 1950 with Broadcom NICs - which through bitter experience I know to have a number of problems. Firstly, I installed the latest driver; however, I did not install the BASP suite. I then manually set the TCP Offload engine to disabled and also disabled Large Send Offload.
My gut feel is that the problem is caused by one of:
TCP Offload
LSO
BASP
I have just had my first successful backup in three days, so I'll leave it a couple of days and reintroduce the above features one by one until I have the failure.
I don't normally post but I think there is very little on BE 2010 R2.
Later.