ClearPath OS 2200 Series Release 13.2 Software Planning and ...

Table 4–5. T9840D and T10000A Summary of Features
Tape and DVD
Features/Capabilities Supported by the Exec Fibre T9840D Fibre T10000A
Tape Mark Buffering Phase II (BUFTAP) y y
Operator clean message y y
Media manager support y y
CKRS support y y
1 Tape Alert Log Sense page is saved in the ESI log entry.
4.6.12. T9940B Tape Subsystem
T9940B tape subsystems connect to ClearPath systems server channels through Fibre
Channel (FC) SCSI channels. T9940B tape subsystems are used in STK tape libraries.
The T9940B uses the existing Client System Component (CSC) library feature when it is
included in tape libraries (this version of CSC still uses the STK$ Executive request). The
tape device driver is supported within the Exec through the SCSITIS separately packaged
Exec feature when the T9940B attaches to the host through FCSCSI channels.
T9940B tape subsystems provide a maximum capacity per cartridge of 200 GB of
uncompressed data. The tape subsystems use the LZ1 data compression algorithm that
can improve capacity by factors of 2 and greater. However, individual results might vary
depending on characteristics of the data and other variables.
The tape cartridges use half-inch tape. These cartridges are not interchangeable with
cartridges used with 18-track, 36-track, DLT, T9840A, T9840B, or T9840C tape drives.
The Exec provides unique equipment mnemonics for configuring the subsystem and a
unique specific assign mnemonic for assigning tape files. Other than generic assign
mnemonic T, existing assign mnemonics used to assign 1/2-inch cartridge tapes cannot
be used to assign T9940B tape drives.
The Exec supports T9940B tape subsystems as boot devices, system dump devices,
audit trail devices, and for checkpoint/restart. Checkpoint can assign T9940B tape
devices with the new assign mnemonic HIS99B, or the more generic assign mnemonic
T. Restart can assign T9940B tape devices with the new assign mnemonic, HIS99B.
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