Release Note для Spectra Logic spectra t120
Backing Up the MLM Database
December 2008
Spectra T950 Library
87
Backing Up the MLM Database
After using MLM for some period of time, Spectra Logic strongly
recommends backing up the MLM database to a USB key. In the event of a
disaster, you can use the backup to restore the MLM database information
for the media in your library instead of rebuilding it by loading each
cartridge into a drive (see
recommends backing up the MLM database to a USB key. In the event of a
disaster, you can use the backup to restore the MLM database information
for the media in your library instead of rebuilding it by loading each
cartridge into a drive (see
Note:
For extra security, the library automatically backs up its
configuration and the MLM data base once a week and
whenever a partition is created or modified. See
configuration and the MLM data base once a week and
whenever a partition is created or modified. See
for
detailed information.
Deciding when and how often you back up the MLM database depends on
many factors, including how often tapes are loaded into a tape drive.
If all of the tapes are loaded into drives frequently, the MLM database
many factors, including how often tapes are loaded into a tape drive.
If all of the tapes are loaded into drives frequently, the MLM database
can be rebuilt relatively quickly. The database can be backed up less
frequently.
frequently.
If many of the tapes remain in the library without being loaded into a
drive for a long period of time, or if tapes are exported and stay outside
of the library for a long period of time, rebuilding the MLM database
can take a long time. Back up the MLM database more frequently.
of the library for a long period of time, rebuilding the MLM database
can take a long time. Back up the MLM database more frequently.
Back Up the MLM Database
Based on your environment, determine how frequently backups are
needed, then use the following steps to create a backup. You can choose to
save the backup to a USB key or send it as an email attachment to a
previously configured mail recipient.
needed, then use the following steps to create a backup. You can choose to
save the backup to a USB key or send it as an email attachment to a
previously configured mail recipient.
1. Log into the library with superuser or administrator privileges.
2. Select Maintenance > Tools > Utilities. The Utilities screen displays.
3. Select Show Advanced. The Advanced Utilities Confirmation screen
displays.
4. Select Next. The Utilities screen refreshes to show the advanced Utilities
screen.
Important
The automatic weekly auto-save file reflects the state of the MLM database at the
time the backup was created. If MLM media is imported into or exported from the
library during the period between the automatic weekly auto-save operations, the
backup of the MLM database may not accurately reflect the library’s inventory.
time the backup was created. If MLM media is imported into or exported from the
library during the period between the automatic weekly auto-save operations, the
backup of the MLM database may not accurately reflect the library’s inventory.
If you plan to import or export a large number of MLM-cartridges, backup the MLM
database using the procedure described in this section to ensure that you have a
backup that accurately reflects the information in the database.
database using the procedure described in this section to ensure that you have a
backup that accurately reflects the information in the database.