Disk image, flash, or sequential backup methods provide the fastest performance
because they back up an entire disk, partition, or LUN, which minimizes disk seeking.
The disadvantage is that backup and restore operations work on an entire disk,
partition, or LUN. You might not be able to back up a subset of files or restore a
single file. If you can restore a single file, the restore process is slow.
Database backup performance varies based on the use model. To improve
performance when backing up data from a database:
• Use specific backup agents for the database.
• Use the latest versions of the databases.
• Do not back up individual mailboxes.
• Do not back up specific records or do a record-by-record backup.
• Do not back up when the database is in heavy use.
Connection from the Archive/Backup Host Server to the
Library
For the best performance, the connection from the host server to the library must have
enough bandwidth to provide enough data to keep the tape drive streaming. Current
LTO tape drives take advantage of some of the fastest interfaces available so the type
of interface used to connect the library to the host server is not likely to be the cause
of a performance issue. However, issues with cables and connectors can limit
performance.
Note: Do not exceed recommended cable lengths.
Media
The type and condition of the media also affect backup performance. For best
performance, use media that is the same LTO generation as the tape drives.
FINDING EVENT INFORMATION
You can find error codes by viewing log files from the Maintenance > Logs and
Traces > View Logs screen or downloading support tickets from the Maintenance >
Download Support Ticket screen. See Viewing Log Files on page195 or Downloading
Drive Logs on page203.
JANUARY 2023 223
SPECTRA STACK LIBRARY
USER GUIDE
CHAPTER 8 - LIBRARY TROUBLESHOOTING
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