HP StorageWorks MSL2024, User'S And Service Manual

Page: 143 / 276

The operator begins the sequence by loading the desired tape into the tape drive. When a tape is
unloaded for any reason, the device automatically removes the tape from the drive, returns it to its
original slot, then loads the tape from the next available higher numbered slot.
To further determine how you want tapes loaded into the tape drive while in Sequential mode, you
can set the
Loop and Autoload options.
• When Autoload mode is set, the device automatically loads the cartridge from the lowest-numbered
full slot into the tape drive. It then follows standard sequential operation. After configuring Autoload
mode, you must do one of the following for Autoload mode to take effect:
• Power cycle the device from the front panel.
• Reboot the device from the RMI Support: Reboot screen.
• Move the lowest-numbered cartridge to the drive before starting the backup application. If the
mailslot is enabled, the lowest cartridge location will be in the mailslot.
• When Loop mode is on, the original first cartridge in the sequence is reloaded after the device
has cycled through all available cartridges. If Loop mode is off and the last cartridge has been
unloaded, the device stops loading cartridges until you load another manually.
CAUTION:
Use caution when choosing Loop mode because it makes it possible to overwrite data on previously
written cartridges.
When a Library is partitioned into logical libraries, each logical library operates as an independent
library. Thus, the Library only loads tapes from the slots associated with one logical library into the
tape drive associated with that logical library; it will not load tapes from slots associated with another
logical library. Only the lowest-numbered tape drive in a multi-drive logical library will be used.
Automatic mode : In Automatic mode, the device switches from Sequential mode into Random mode
when it receives certain SCSI commands. Automatic mode is the default setting.
Automatic cleaning
When auto clean is enabled, the Tape Library automatically loads a cleaning cartridge when a tape
drive needs to be cleaned. The Library identifies a tape cartridge as a cleaning cartridge if it has a
barcode label that starts with CLN or after an unlabeled cleaning tape has been loaded into the tape
drive.
The Library can use a cleaning cartridge from any slot, even if the slot is reserved. The Library keeps
track of the usage count for each of the cleaning cartridges. When multiple cleaning cartridges are
available, the Library will first choose an unknown cleaning cartridge so the Library can start tracking
the cartridge's usage count. If the Library knows the usage count for all of the cleaning cartridges,
the Library will choose the one with the highest usage count.
Auto cleaning is disabled by default. You can enable automatic cleaning even if there are no cleaning
cartridges in the device. In this case, the device will display a warning message.
CAUTION:
Only enable automatic cleaning in either the backup application or the Library, not both.
HP StorageWorks MSL2024, MSL4048, MSL8048, and MSL8096 Tape Libraries User and service
guide 143