Dell 3 manual Random Array Deletion, Overview, Ta b l e 7 1

Ta b l e 7 - 1 2 .	A r r ay C o n f i g u r at i on P l an n e r (continued)
Number	Possible RAID	Relative	Fault	Effective
of Drives	Levels	Performance	Tolerance	Capacity
8	RAID 50	Good	Yes	75%
	(spanned)
16	RAID 10	Excellent	Yes	50%
	(spanned)
16	RAID 50	Good	Yes	88%
	(spanned)
32	RAID 0	Excellent	No	100%
32	RAID 10	Good	Yes	50%
32	RAID 50	Good	Yes	94%

Random Array Deletion

The PERC controllers support random array deletion, which is the ability to delete any unwanted logical drives and use that space for a new logical drive.

This section describes the impact of random array deletion from the user perspective. It discusses the configuration module architecture modification, and the data structure.

Overview

On a running operating system, you can not delete a physical drive entry in the drive object repository. Additions and deletions can be done only at the end of the repository. The operating system driver receives this support from the firmware and maintains the same object repository table for that session of the operating system.

NOTE: Refer to Chapter 11 and Chapter 12 for the procedures for random array deletion.

Configuring PERC 3

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