When backing up an Exchange database with GRT enabled to a Dell DL2000 Device the backup may fail with the error "-1022 There is a disk I/O error"
Error in debug logs:
REMSRV: [06/14/10 14:02:45]  JetExternalRestore2
REMSRV: [06/14/10 14:02:45]  JetExternalRestore(2) - ERROR::RC = - 1022 - -1022 There is a disk IO error.
This issue has been resolved by Backup Exec 2010 R2 Hotfix 148347