User`s guide

5-4
Configuring the Controller
Table 5-1 Host Channel Settings
Host
Channel
Setting
Modes
Available Description
Enable/
Disable
Stand-alone
single-port
You should not disable the host channel
when in single-port mode.
Stand-alone
dual-port
In dual-port mode, you can disable a
channel when you plan to shut down the
host on that channel.
Target ID All modes You may need to change the host
channel’s SCSI target ID when you have
existing devices at ID 1 (the default), or
when you are adding more than one
controller to a system.You can set the
target ID to any number between 0 and
15.
Controller
LUN
All The controller has just one LUN that you
can change when you configure the host
channels. You only need to assign a
controller LUN if you are using the
Configuration Application Program
Interface (CAPI) to configure the
controller over a host channel via SCSI
protocol extensions.
You have two options for setting the
LUN:
■ None—Use this setting if you are not
using CAPI to configure the controller
(This change takes effect immediately
unless the controller LUN is currently
in use.)
■ Any number between 0 and 63—Select
a specific number if you want the
controller’s LUN to stay the same when
you reboot.
Note: For more information about LUNs,
see Understanding LUNs and Viewing LUN
Information on page 5-5
Reset on
Failover
Active-
active
Turn this option on (select Yes) if you find
that failover takes a long time. This option
tells the controller to reset the SCSI bus
after a failover and speeds failover in
some situations.