Compaq AlphaServer ES40 User Manual

6-18 Compaq AlphaServer ES40 Service Guide
Table 6–1 SRM Environment Variables Used on ES40 Systems
(Continued)
Variable Attributes Description
pk*0_fast
NV
Enables fast SCSI devices on a SCSI controller to
perform in standard or fast mode.
0—Sets the default speed for devices on the
controller to standard SCSI. If a controller is set
to standard SCSI mode, both standard and fast
SCSI devices will perform in standard mode.
1—Sets the default speed for devices on the
controller to fast SCSI mode.
Devices on a controller that connects to both
standard and Fast SCSI devices will
automatically perform at the appropriate rate for
the device, either fast or standard mode.
pk*0_host_id
NV Sets the controller host bus node ID to a value
between 0 and 7.
0 to 7—Assigns bus node ID for specified host
adapter.
pk*0_soft_term
NV
Enables or disables SCSI terminators for optional
SCSI controllers. This environment variable
applies to systems using the Qlogic SCSI
controller, though it does not affect the onboard
controller.
The Qlogic SCSI controller implements the 16-bit
wide SCSI bus. The Qlogic module has two
terminators, one for the 8 low bits and one for the
high 8 bits. There are five possible values:
off—Turns off both low 8 bits and high 8 bits.
Low—Turns on low 8 bits and turns off high 8
bits.
High—Turns on high 8 bits and turns off low 8
bits.
On—Turns on both low 8 bits and high 8 bits.
Diff—Places the bus in differential mode.

Compaq AlphaServer ES40 Specifications

General

Brand	Compaq
Model	AlphaServer ES40
Category	Server
Language	English