Changing The Boot Disk; Using Wide Scsi Host Adapters And Devices; Using Tunable Parameters For The Ad160 Driver; Setting Parameters - HP D5970A - NetServer - LCII Installation And Configuration Manual

Changing the Boot Disk

If you are changing the boot device from a non-SCSI hard disk to a SCSI hard
disk attached to an HP Ultra3 SCSI host bus adapter, you must reinstall SCO
OpenServer.
If you are already booting from a SCSI hard disk attached to an HP PCI SCSI
host bus adapter, and wish to boot from the same SCSI hard disk attached to an
HP Ultra3 host bus adapter, you may elect to either reinstall SCO OpenServer
with the new driver, or update SCO OpenServer with the new driver. See
"Installing the Driver When Installing SCO OpenServer" on page 67, and
"Installing the Driver When SCO OpenServer is Already Installed" on page 68
for instructions.

Using Wide SCSI Host Adapters and Devices

SCO OpenServer 5.0.x supports SCSI IDs 0 to 15.

Using Tunable Parameters for the ad160 Driver

For SCO OpenServer, some parameters are defined in the following file:
/etc/conf/pack.d/ad160/space.c
After modifying the space.c file, you must rebuild the kernel for the new
parameters to take effect. The following section describes how to set the tunable
parameters.

Setting Parameters

If the space.c file has not been modified, all the parameters are set according
to the values specified by your SCSISelect utility for your HP Ultra3 SCSI host
bus adapter. However, you can override the parameters by modifying the
space.c file. The information you need to change the parameters is included
in the space.c file. Examples are provided in the following sections.
If you want to change the configured values, the first number indicates whether
the default should be changed. If it is set to 0 (zero), the parameter is set to the
default. If it is set to 1, the second number is used to override the default. For
example:
74