IBM DS3200 Storage Subsystem manual Hardware inspection, Turning on the storage subsystem

4.Use the Storage Subsystem Profile or DS3000 Profile to make sure that the following functions are enabled:

vFor all DS3000 models, enable Media Scan both at the controller level and at the LUN level.

vFor all DS3000 models, enable the read/write cache. In addition, use the Storage Subsystem Profile to make sure that cache is matched between the controllers.

Hardware inspection

In addition to the Health Check process, regular hardware inspection and maintenance helps to support the optimal performance of the DS3200 storage configuration. Periodically inspect the components of the DS3200 storage configuration.

For best results, follow these guidelines:

vMaintain an up-to-date storage subsystem profile for the DS3200 storage configuration. Save the profile to a server disk that will remain accessible in case of a DS3200 storage configuration failure. Do not save the profile only to a LUN in the DS3200 storage subsystem.

vDevelop a change-management plan. The plan should include schedules for updating subsystem firmware and server host software.

Note: Some updates might require storage subsystem downtime.

vUse applicable IBM-approved cables for all situations. Note in the configuration documentation whether any cables are not IBM-approved.

vCreate and maintain a cabling diagram of the current configuration. Keep this diagram updated as you make configuration changes, and keep the cabling diagram available for review.

vCreate and maintain a list of other components that are being used within the cabling diagram (such as the host system and other attached devices).

vMake sure that all controllers and ESMs are correctly seated.

vMake sure that all drives are correctly seated.

vMake sure that cables are managed correctly.

vEnsure proper air flow and temperature for all components in the storage configuration.

You can find details about many of these inspection and maintenance responsibilities in the applicable sections of this document.

In addition to these inspection and maintenance responsibilities, conduct DS3200 training for staff that support DS3200 storage configurations. Although training is not a part of the Health Check process, training reduces the potential for configuration problems and contributes to the correct operation of the system.

Turning on the storage subsystem

This section contains instructions for turning on the storage subsystem under normal situations. “Turning off the storage subsystem” on page 55 contains instructions for turning off the storage subsystem under normal and emergency situations. When you turn on and turn off the DS3200, be sure to use the startup sequence that is described in this section. If you are turning on the storage subsystem after an emergency shutdown or power outage, see “Restoring power after an unexpected shutdown” on page 57.

46System Storage DS3200 Storage Subsystem: Installation, User’s, and Maintenance Guide