Compression is turned off

If you use the diagnostics for your tape drive, they will report that compression is turned off, and may even prompt you to change settings in your backup software. Don't worry, it's not as bad as it first seems.

SQL consistency check errors

If you are backing up an SQL server, it's advisable to perform a consistency check as part of the backup. When this check fails, it can be hard to work out why, so you can run a check manually. These instructions are for SQL Server 2005.