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Chapter 12. Attaching to a Windows 2000 host

This chapter tells you how to attach the ESS to a Windows 2000 host system with

SCSI and fibre-channel adapters.

Attaching with SCSI adapters

This section describes how to attach an ESS to a Windows NT host system with

SCSI adapters. For procedures about how to attach an ESS to a Windows 2000

host system with fibre-channel adapters, see “Attaching with fibre-channel adapters”

on page 142.

Attachment requirements

This section lists the requirements for attaching the ESS to your host system:

v Check the LUN limitations for your host system; see Table 6 on page 11.

v Ensure that you have the documentation for your host system and the IBM

Enterprise Storage Server User’s Guide. The User’s Guide is on the compact

disc that you receive with the ESS.

For details about the release level for your operating system, see the following

Web site:

www.storage.ibm.com/hardsoft/products/ess/supserver.htm

Either you or an IBM service support representative (SSR) must perform the

following tasks to install and configure an ESS.

1. The IBM SSR installs the ESS by using the procedures in the IBM Enterprise

Storage Server Service Guide.

2. You assign the SCSI hosts to the SCSI ports on the ESS.

Note: Use the information on the logical configuration work sheet in the IBM

Enterprise Storage Server Configuration Planner that you should have

previously filled out.

3. You configure the host system for the ESS by using the instructions in your host

system publications.

Notes:

1. Version 1.3.0.0 of the IBM Subsystem Device Driver supports the Windows

2000 host system in a clustering environment. To have failover protection on an

open system, the IBM Subsystem Device Driver requires a minimum of two

adapters. You can run the Subsystem Device Driver with one SCSI adapter, but

you have no failover protection. The maximum number of adapters supported is

16 for a total of 32 SCSI ports.

See the following web site for the most current information about the IBM

Subsystem Device Driver:

www.ibm.com/storage/support/techsup/swtechsup.nsf/support/sddupdates

2. To improve performance, IBM recommends that you map to the LUNs for the

target volumes of the Windows 2000 host until you need access to the data on

the target volume. Perform the LUN mapping after the Peer-to-Peer Remote

Copy operation and immediately before you need access to the data. You must

restart the host system before you can access the data on the target volume.

You can greatly reduce the time it takes for the host system to restart if you

perform the LUN mapping. Otherwise, the time to restart could take 10 minutes

per Peer-to-Peer Remote Copy target volume.