User's Guide

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T-010, Rev. B November 13, 2001
Use the output of these two commands to see which SCSI target id
numbers are free. In the above example a tape drive is attached at target id
6. SCSI ID #7 is almost always dedicated to the SCSI controller. Never
configure your target device for ID 7 unless you are absolutely sure that the
controller is not addressed for ID 7. See figure 1 to view how to set the
SCSI ID address jumpers for the Viper 200.
The widely available distributions of Linux will automatically install the
proper SCSI and tape device drivers. If you executed the cat command
above you are already ensured that the SCSI driver for your controller is
installed. To view currently loaded modules execute the
lsmod
command.
Ensure that one of the entries is
st
.
To view the st device number for your attached tape drive execute the
command:
dmesg | grep tape
You should see output similar to:
Detected SCSI tape st0 and scsi0 . . .
Using the Viper 200
The Viper 200 can be configured via the mt command options and a default
configuration can be setup using the ‘stsetoptions’ command from within
the mt command. Refer to the man page for mt for details. We suggest not
using the erase command nor commands which attempt to partition the
tape. Partitioning is not suppported in the LTO format.
For commands that use density and tape size settings the tape density is
124,000 bpi and the tape length is 1800 feet. For commands which use a
blocking factor we suggest a factor of 128.
Configuring for SGI Irix
Finding current SCSI controllers and targets
In order to properly attach SCSI devices to hosts it is necessary to ensure
that each target device has a unique SCSI address. The command
hinv