IBM SG24-4763-00 manual Back up to Diskette, ServeRAID Adapter Advanced Functions Menu

This soft copy for use by IBM employees only.

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IBM PC ServeRAID Adapter Disk Array Configuration Ver. 2.00

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

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￿Advanced Functions ￿￿￿￿Ch 1￿￿￿￿￿Ch 2￿￿￿￿￿Ch 3￿￿￿

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	￿ 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	￿
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		￿10 ---	￿10 ---	￿10 ---	￿
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		￿14 ---	￿14 ---	￿14 ---	￿
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	Select a choice using the Up Arrow (￿) and Down Arrow (￿) keys and press Enter.
￿	Press Esc to return to previous menu.

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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:

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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