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108 Cartridges
Write-Protecting Cartridges
If you want to protect the data on a cartridge from being altered or
overwritten, you can write-protect the cartridge. Do this before you insert the
cartridge. If you slide the red tab after the cartridge is inserted in the drive,
the change will not take effect until the cartridge is removed and reinserted.
Caution Write-protection will not prevent a cartridge being erased by
bulk-erasure or degaussing. Do not bulk erase Ultrium format
cartridges. This will destroy pre-recorded servo information and
render the cartridge unusable.
To write-protect a cartridge, slide the red tab by the label
area on the rear face of the cartridge to close the hole.
Note the padlock on the tab that indicates that the
cartridge is protected.
To write-enable a cartridge, slide the red tab back so that
the hole is open, before loading the cartridge into the
drive.
Cartridge Life
Under optimum environmental conditions, HP Ultrium cartridges are currently
specified to 1,000,000 passes over any part of the tape. In operational terms,
this can be translated to about 2000 full backup or restore operations.
However, it is recommended that cartridges are used for no more than
100 full backup operations and the cartridge warranty is based on this
figure. Under severe environmental conditions, particularly where the tape
drive is used at very low humidity or if certain areas of the tape are accessed
frequently, the number of backup operations should be limited even further.