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HP Ultrium drives technical reference manual, volume 5: UNIX configuration guide 15
HP restricted
3 HP alpha UNIX
HP alpha UNIX 5.x
1. Add the following entry to your /dev/ddr.dbase file:
SCSIDEVICE
Type = tape
Name = “HP” “Ultrium”
#
PARAMETERS:
TypeSubClass = lto # Linear Tape Open
BlockSize = 262144
TagQueueDepth = 0
MaxTransferSize = 0xffffff # 16Mb - 1
ReadyTimeSeconds = 120 # Seconds
SyncTransfers = enabled
WideTransfers = enabled
InquiryLength = 0x20
DENSITY:
DensityNumber = 0,1,2,3,4,5,6,7
OneFileMarkOnClose = yes
DensityCode = 0x44
Blocking = 0
CompressionCode = 1
Buffered = 1
Speed = 0
MODESELECT:
ModeSelectNumber = 0
SavePage = No
PageFormat = scsi2
BlockDescriptor = yes
TransferLength = 16
Hdr.Tape.BufferMode = 0x1
Hdr.MediumType = 0
Data.UBYTE[0] = 0x3D # Vendor Unique Page Code 3D
Data.UBYTE[1] = 0x02
Data.UBYTE[2] = 0x01
Data.UBYTE[3] = 0x00
2. Rebuild the kernel by running /sbin/ddr_config, then reboot the system with the tape drive
attached. Device files for the Ultrium drive will be generated in /dev/tape and /dev/ntape
when you reboot.
3. The names of the device files can be interpreted as follows:
Devices in the /dev/ntape
directory are “no-rewind” devices. Those in /dev/tape will
perform rewind on close.