HP LTO Ultrium 5 tape drives UNIX, Linux and OpenVMS configuration guide (March 2010)

MeaningValueParameter

Variable record size not limited to 64 KB.

0x8000

Device determines which of the two mode pages the device

supports for selecting or deselecting compression.

0x10000

So 0xd639 indicates variable record length, bsf and bsr enabled, long

timeouts for erase, EOD recognition, Unloadable device driver, 5 x longer

timeouts, buffer writes and pre-acknowledge success, variable records not

limited to 64 KB, auto-density over-ride and MODE SELECT compression.

Similarly, 0x018659 indicates variable record length, bsf and bsr enabled,

automatic density determination, EOD recognition, unloadable device driver,

variable records not limited to 64 KB, and device selection of mode pages

for controlling compression.

There are four densities following in the parameter list.4<no. of

densities>

Creates a device file with compression disabled.

0x00<density 0>

The Ultrium 3 density code for data compression with Ultrium 3 media

0x44<density 1>

The Ultrium 4 density code for data compression with Ultrium 4 media

0x46<density 2>

The density code for data compression enabled by default.

0x58<density 3>

Density 3 (0x58) is the default for Generation 5 drives.3

<default

density>

All timeouts are in seconds

Values for the parameters for name are as follows:

MeaningValueParameter

X specifies the target address

of the device.

Xtarget

Specifies the LUN for the device.

0lun

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