HSG80 ACS Solution Software V8.6 for Windows NT and Windows 2000 Installation and Configuration Guide

3–8 HSG80 ACS Solution Software Version 8.6 for Windows NT and Windows 2000 Installation and

Configuration Guide

Settings

Your new storage system components must be initially configured using a serial cable

connection to the HSG80 array controllers. You may change one or more of the following

settings: SCSI-2 or SCSI-3 mode, CCL enabled or disabled, transparent or multiple-bus

failover mode, and arbitrated loop or fabric mode.

The controllers are preset with the following settings:

■ SCSI-2 mode

■ CCL enabled

■ Transparent Failover mode

■ Arbitrated Loop mode (fixed addresses)

For Windows NT 4.0 or Windows 2000, you can use either SCSI-2 or SCSI-3 mode with

the ACS 8.6 version of HSG80 controller software. However, if you intend to use your

storage system in a heterogeneous system environment, you may need to use a specific

SCSI mode depending on what is required for the other, connected operating systems.

Also, for Windows NT 4.0/Windows 2000, if you use the preset SCSI-2 mode, then you

must change CCL to the disabled state.

You will need to use serial for your initial set up to define how your server and storage

system interact. The HSG80 controller comes shipped with a setting of SCSI-2 and CCL

enabled. This means the storage controller can communicate using SCSI-2 protocols and

its Command Console LUN feature is enabled. With ACS V8.6, SCSI-3 protocol is also

supported. If you choose to use SCSI-3, then CCL is permanently enabled. The choices

you have for Windows NT are to use either SCSI-3 with CCL permanently enabled, or

SCSI-2 with CCL disabled.

NOTE: If you choose SCSI-2 with CCL enabled you will get Disk Administrator errors. Therefore,

at initial set up, you will need to either:

- Leave the controller set to SCSI-2 protocol but disable CCL

- Set the controller to SCSI-3 protocol

Your choice will depend on how you later intend to use your storage system. In certain

heterogeneous environments, you may be required to use SCSI-3 protocols (for example,

if sharing your storage system with an OpenVMS-based server). You may choose to use

SCSI-2 protocol if you are sharing your storage system with a server that requires SCSI-2