Instruction Manual

Operation
M8701A / M8702A ACL Tape Library Installation and User’s Guide—694636-001
4-15
Configuration
of the bar code label 12345678, if alignment is left, the device will report 123456. If
alignment is right, the device will report 345678. The default is left.
!
Ignore Barcode Media ID — when disabled, the barcode Media ID on the tape
cartridges will be checked by the device. The device will only allow appropriate
tape cartridges to be loaded into tape drives. The barcode Media ID is the last two
characters of the barcode. For example, an LTO-4 labeled cartridge will not be
allowed to move into an LTO-3 tape drive. When Ignore Barcode Media ID is
enabled, the device will move any tape to any tape drive. If the cartridge is
incompatible with the tape drive, a message will be displayed. It is strongly
recommended that all tape cartridges have barcodes with the correct Media ID.
!
Magazine access using front panel - Admin password required — when enabled,
the Administrator password is required to remove the magazines from the front
panel. When disabled, the magazines may be removed using the operator control
panel without entering a password. The default is to require the Administrator
password.
The following settings are configurable for each logical library:
!
Library LUN Hosted By Drive — specifies the master tape drive for the logical
library. The default is the lowest numbered tape drive in the logical library. If a
logical library has only one tape drive, it is the master drive for the logical library. If
a logical library has more than one tape drive, you may specify the master. The
number is the physical drive number.
!
Library Mode — specifies the library mode for each logical library. The default
mode is Automatic.
The device supports three behavior modes: Random, Sequential, and Automatic.
The device automatically detects the required mode from the series of SCSI
commands it receives; however, you can also change the mode. Choose the
operating mode based on the capabilities of the software controlling the tape
cartridges.
Random mode — In Random mode, the device does not automatically load tapes
into the tape drives; it waits for commands from the software or operator to load
and unload tapes. Random mode is used with a full featured or a robotics-aware
backup application and is the most common mode of operation. Your backup
software must support robotics, which may require an additional software module.
Sequential mode — In Sequential mode, the device automatically loads and
unloads tapes from the drive. Sequential mode is used when the backup software
is NOT robotics-aware or was designed for standalone drives only.
In Sequential mode, the logical library will only use the lowest-numbered tape drive
in the logical library.
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