| IBM SG24-4763-00

This soft copy for use by IBM employees only.

IBM PC ServeRAID Adapter Disk Array Configuration Ver. 2.00

Adapter Number: 1 Bus Number: 0 Host ID = Null Config

Advanced Functions Ch 1Ch 2Ch 3

ArrayArrayArray

1. Help	Bay	Bay	Bay
2 2. Backup IPS ServeRAID Config	1 ---	1 ---	1 ONL A
3 3. Restore/Convert Saved Config	2 ---	2 ---	2 ONL A
4 4. Change Write Policy	3 ---	3 ---	3 HSP
5 5. Change RAID Parameters	4 ---	4 ---	4 ---
6 6. IBM RAID Subsystem Diagnostic	5 ---	5 ---	5 ---
7 7. Init/View/Synchronize Config	6 ---	6 ---	6 ---
8 8. Display/Change Adapter Params	7 ---	7 ---	7 CDR
9. Exit	8 INI	8 INI	8 INI
9 ---		9 ---	9 ---
	10 ---	10 ---	10 ---
	11 ---	11 ---	11 ---
	12 ---	12 ---	12 ---
	13 ---	13 ---	13 ---
	14 ---	14 ---	14 ---
	15 ---	15 ---	15 ---
	16 ---	16 ---	16 ---

Select a choice using the Up Arrow () and Down Arrow () keys and press Enter.
Press Esc to return to previous menu.

Figure 43. ServeRAID Adapter Advanced Functions Menu

2 Backup IPS ServeRAID Config; and

3 Restore/Convert Saved Config

These two options let you back up or restore the disk array configuration to or from a diskette. This should be done when ever the configuration changes (either manually by you, or automatically when a hot-spare is used to replace a defunct drive).

Back up to Diskette!

We strongly recommend you back up your ServeRAID configuration to diskette whenever a change is made.

The Restore/Convert option also helps you upgrade from a PCI RAID or Streaming RAID adapter by converting your previous configuration.

Note: There are some limitations to this conversion option. See the ServeRAID User′s Guide for more information.

4 Change Write Policy

Select Change write policy to configure a logical drive of an array to work in either the write-through mode or the write-back mode. In the write-back mode, the completion status is sent before the data is actually written to the drives. Write-back mode generally provides higher performance with increased risk of data loss in the event of power failure. In Write-through mode completion status is sent after the data is written to the drives.

5 Change RAID Parameters

Change RAID Parameters allows you fine tune the RAID subsystem:

•

Stripe unit size - should be set to the size of I/O requests

Rebuild priority - specify which has higher priority: rebuild I/O or system I/O

Auto rearrange - allows the adapter to resolve configuration related conflicts automatically.

Read ahead - toggles the cache read ahead up to the end of stripe unit.

54PC Server and Windows NT Integration Guide

IBM SG24-4763-00 manual

Models: SG24-4763-00

Figure 43. ServeRAID Adapter Advanced Functions Menu

Back up to Diskette!