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AHA-2740W/2742W/2744W User’s Guide
AHA-2740W/2742W/2744W User’s Guide
Stock Number: 510647-00, Rev. A
Page: 3-14
Print Spec Number: 492897-00
Current Date: 8/3/94
ECN Date: 8/9/94
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Use the cursor keys to move between options. To toggle values for
each option, press the Enter key.
Enable Disconnection
This option is used to determine whether or not the host adapter
will allow a SCSI device to disconnect from the SCSI bus (sometimes
referred to as disconnect/reconnect). This allows the host adapter to
perform other operations on the SCSI bus while the SCSI device is
temporarily disconnected.
When set to yes, the SCSI device may disconnect from the SCSI bus.
The SCSI device, however, may choose not to disconnect, even if
allowed to by the host adapter (this is usually configurable on the
SCSI device). When set to no, the SCSI device will not be allowed to
disconnect from the SCSI bus. The default setting is yes.
In general, disconnect should be allowed for the most efficient SCSI
bus utilization and highest overall system performance. If only one
SCSI device is attached to the SCSI host adapter, disconnects are not
required for efficient SCSI bus utilization since only one SCSI device
is using the SCSI bus. A slight performance increase may be realized
if disconnect is not allowed in this case, due to the decreased SCSI
Configuration Setting for SCSI Devices (1x16)
Channel A Device ID
Enable Disconnection
Initiate Sync Negotiation
Maximum Sync Xfer Rate
Initiate Wide Negotiation
Include in BIOS Scan
Error if Device Not Found
Send Start Unit Command
OK <ESC> <DEFAULT>
#0
yes
yes
10.0
yes
yes
no
no
#1
yes
yes
10.0
yes
yes
no
no
#2
yes
yes
10.0
yes
yes
no
no
#3
yes
yes
10.0
yes
yes
no
no
#4
yes
yes
10.0
yes
yes
no
no
#5
yes
yes
10.0
yes
yes
no
no
#6
yes
yes
10.0
yes
yes
no
no
#7
yes
yes
10.0
yes
yes
no
no
Channel A Device ID
Enable Disconnection
Initiate Sync Negotiation
Maximum Sync Xfer Rate
Initiate Wide Negotiation
Include in BIOS Scan
Error if Device Not Found
Send Start Unit Command
#8
yes
yes
10.0
yes
yes
no
no
#9
yes
yes
10.0
yes
yes
no
no
#10
yes
yes
10.0
yes
yes
no
no
#11
yes
yes
10.0
yes
yes
no
no
#12
yes
yes
10.0
yes
yes
no
no
#13
yes
yes
10.0
yes
yes
no
no
#14
yes
yes
10.0
yes
yes
no
no
#15
yes
yes
10.0
yes
yes
no
no
Figure 3-14. SCSI Device Configuration
