ETERNUS LT40 S2 tape library Periphery
54 U41861-J-Z126-1-76
● When the other drive fails, the first logical device can be used again. However, here it
must be borne in mind that the next time the tape emulation is assigned (
/ATTACH-
DEVICE
command) the second device cannot be recognized and therefore performs no
partitioning. The cartridges of the second device are therefore also available to what
was originally the first device, which under some circumstances can lead to unwanted
results. If the tape library is switched on and detects the defect or the absence of a
drive, it automatically switches over the library master drive. In this case, too, the tape
library is displayed to BS2000 as a non-partitioned device following the next
assignment (
/ATTACH-DEVICE command).
i Note the following in the case of a tape library with two drives in Sequential Mode:
Logical partitioning of the tape drive takes place in X2000 without it being stored in
the tape library. In Sequential Mode only the first drive is used. When a cartridge is
ejected, the next cartridge from the next highest slot is automatically loaded. In this
case the logical partitioning limits of X2000 are not complied with. When the
BS2000 command
/UNLOAD-TAPE is used or in the case of backup operations with
a change of tape, these special features must be borne in mind. You are therefore
recommended to insert cartridges in Sequential Mode only “manually” via OCP or
to insert and swap the RMU. As options such as Autoload and Loop are global within
the device, you are recommended not to enable these in BS2000 mode.
Cleaning the drives
LTO drives do not need to be cleaned regularly; they request a cleaning tape when one is
required.
The tape library recognizes manual cleaning mode and automatic cleaning mode.
To ensure BS2000 operates problem-free, you must set automatic cleaning mode:
Ê Insert a cleaning cartridge in mailslot 3.
Ê Enable automatic cleaning mode with Auto Clean.
See section “Device settings” on page 51.
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