Nortel Call Center Server Installation And Maintenance Manual page 1007

July 2007
Tape size
Ensure that the backup tape is large enough to store the data you are backing up.
You cannot use multiple backup tapes for a single backup. For more information
on calculating tape capacity requirements, see "Calculating the capacity
requirements for database backups" on page 1012.
Tape rotation
Rotate tapes daily and store them at an off-site location. Do not keep a tape in
the tape drive for more than one or two days for the following reasons:
The next backup may overwrite existing data on the tape. If the same tape is
used for several consecutive nightly backups and the tape becomes
damaged, no other backup is available to restore lost data.
Consistent reuse of the same tape accelerates wear on the tape. Tapes may
need replacement earlier than their normal life span.
Nortel recommends storing backup tapes off-site for as long as possible before
reusing them. Store tapes for at least two weeks.
Installation and Maintenance Guide for Windows 2003
Backing up data
1007