C-14
AlphaServer 8200/8400 Operations Manual
Table C-3 Host Adapter Parameters (Continued)
Parameter
Default
Description
Reason to Change
Low Term
Enable
1
If termination not required
on the board.
High Term
Enable
1
If termination not required
on high-order 8 bits, or not
required on the board
Selection
Timeout
250
Sets the selection phase
timeout value (in micro-
seconds)
Optimize system
performance.¹
Maximum
Queue Depth
256
Specifies the maximum
number of outstanding
commands issued to each
SCSI target. When the
number is reached, new
commands are returned
with Queue Full Status.
Optimize system
performance.¹
Single-Ended
or Differential
0
Not applicable for the
ISP1020.
¹ The default setting provides the best performance optimization for most system
configurations. We recommend that you change this default setting only if it does not
provide optimal performance for your system configuration.