Backups suddenly running slow
I have a client who uses Backup Exec 2010 R3. Their backups have been running fine for months however over the last couple of weeks their weekly full backup is taking forever to complete. The backup starts at 8pm Friday and is still running Monday morning when the client changes the tapes. It seems to backup all data and gets to the Verify portion so at least the data is being backed up (I hope).
Going through the job logs I can see that Exchange, System State, and Shadow Copy Components aren't taking too long, they look about right. However the D drive on the data server is taking about 48 hours to complete. The total data to be backed up is a bit over 700GB to an LTO 4 Tape. I'm ata loss as to why this has started happening.
I tried splitting the backup up to a job for Exchange and a job for data but that doesn't seem to have helped.
Any suggestions would be greatly appreciated