Random Array Deletion; Overview - Dell PowerEdge Expandable RAID Controller 3 User Manual

Ta b l e 7 - 1 2 . A r r a y C o n f i g u r a t i o n P l a n n e r (continued)
Number Possible RAID
of Drives Levels
8 RAID 50
(spanned)
16 RAID 10
(spanned)
16 RAID 50
(spanned)
32 RAID 0
32 RAID 10
32 RAID 50

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.
Relative Fault
Performance Tolerance
Good Yes
Excellent Yes
Good Yes
Excellent No
Good Yes
Good Yes
Effective
Capacity
75%
50%
88%
100%
50%
94%
NOTE: Refer to Chapter
11 and Chapter 12 for the
procedures for random
array deletion.
Configuring PERC 3
99