Configuring For Sgi Irix - Certance LTO-2 Online User's Manual

Unix Settings

Configuring for SGI Irix

Finding Current SCSI Controllers and Targets
To properly attach SCSI devices to hosts it is necessary to ensure that each target device has a
unique SCSI address. The command hinv can be used to find all attached SCSI controllers and tar-
get devices. To search for all SCSI controllers and devices use the command:
hinv –v | grep SCSI
The output of the command will be similar to the following:
Integral SCSI controller 0: Version ADAPTEC 7880
Disk drive unit 1 on SCSI controller 0
CD ROM unit 4 on SCSI controller 0
Integral SCSI controller 1: Version ADAPTEC 7880
Tape drive: unit 6 on SCSI controller 1: DAT
This output shows that a tape drive is present on SCSI controller 1 at SCSI ID address #6. Available
SCSI IDs are
0,2,3,5 6, 8 - 15 on controller 0
•
1 - 5 and 8 - 15 on controller 1 (this controller supports Wide/Ultra SCSI)
•
NOTES: SCSI ID #7 is almost always dedicated to the SCSI controller. Never configure your tar-
get 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 LTO-2 half-height drive.
Modifying the IRIX Configuration File
To attach the LTO-2 half-height drive to IRIX the file .scsi. needs to be modified by a text editor. The
file can be found in /var/sysgen/master.d. Open the file and use the text editor to add the following
at the end of the tape device entries:
For IRIX 6.4/6.5
{DATTAPE, TPDAT, 8, 7, "CERTANCE", "ULTRIUM 2", 0, 0, {0},
MTCAN_BSF | MTCAN_BSR | MTCAN_APPEND | MTCAN_SETMK |
MTCAN_PREV | MTCAN_SYNC | MTCAN_SPEOD | MTCAN_CHKRDY |
MTCAN_VAR | MTCAN_SETSZ | MTCAN_SILI | MTCAN_SEEK |
M TCAN_COMPRESS,
40, 5*60, 10*60, 10*60, 3*3600, 512, 256*512,
tpsc_default_dens_count, tpsc_defalt_hwg_dens_names,
tpsc_default_alias_dens_names, {0}, 0, 0, 0, 0, (u_char*) 0},
After modifying the configuration file, recompile the kernel with the autoconfig command and
reboot the system. If you are replacing an existing storage device with the same SCSI ID remove the
device files prior to using the autoconfig command and rebooting the system.

Configuring for SGI Irix

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