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UNIX Settings
Configuring for the DEC UNIX Environment
Digital UNIX Versions 4.0 and Later
With version 4.0 of their UNIX operating system, DEC introduced a new method of configuring the
CAM SCSI driver. Modify the file /etc/ddr.dbase as follows:
1.
Locate the Database entry for the DEC TLZ07 DAT drive
2.
Copy this entry and paste it later in the file, taking care to maintain the file syntax.
3.
Modify the new entry as shown below. Modified sections are shown in bold. See "Configur-
ing Inquiry Strings" on page 27 for information about drive inquiry strings:
SCSIDEVICE
#
Type = tape
Name = "ARCHIVE" "Python"
#
PARAMETERS:
DENSITY:
DENSITY:
4.
Save the file.
5.
Run the command ddr_config -c
ddr_config takes the default input file, ddr.dbase, and build a new device database. This is effective
immediately, and there is no need to rebuild the kernel.
NOTE: ddr.dbase is a unix shell script and is not written in C. This means # is used to signify a
comment, not /* and */ or //, as used in C. Make sure any comments included in this file are
preceded with the # character.
TypeSubClass
= rdat
TagQueueDepth
= 0
MaxTransferSize
= 0x0ffffff
ReadyTimeSeconds
= 60
#
DensityNumber = 0,3,4,5,6,7
DensityCode = default
CompressionCode = 0x0
Buffered = 0x1
#
DensityNumber = 1,2
DensityCode = default
CompressionCode = 0x1
Buffered = 0x1
Configuring for the DEC UNIX Environment
#(16MB-1)
# seconds
28
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