IBM Netfinity ServeRAID-3H, Инструкция по установке и эксплуатации, Страница: 35 / 212

Learning about Express Configuration
Express Configuration provides a quick and easy path for you to
automatically configure your ServeRAID controller. This choice
creates the most efficient ServeRAID configuration based on the
number and capacity of the Ready drives available in your system. If
four or more Ready drives of the same capacity are available, this
choice also will define a
hot-spare drive for the ServeRAID adapter
or controller. A hot-spare drive is a physical drive that is defined for
automatic use when a similar drive fails.
The Express Configuration choice groups up to 16 Ready drives of
the same capacity into one disk array and defines one logical drive
for each array. This choice defines the size of the logical drive,
based on the amount of free space available, and it assigns the
highest RAID level possible, based on the number of physical drives
available.
For example, if your server contains one 1024 MB Ready drive, two
2150 MB Ready drives, and four 4300 MB Ready drives, Express
Configuration will create three arrays and one hot-spare drive as
follows:
Array A: The total capacity of this array is 1024 MB
(1 x 1024 MB) and it contains one 1024 MB RAID
level-0 logical drive.
Array B: The total capacity of this array is 4300 MB
(2 x 2150 MB) and it contains one 2150 MB RAID
level-1 logical drive.
Array C: The total capacity of this array is 12900 MB
(3 x 4300 MB) and it contains one 8600 MB RAID
level-5 logical drive.
Hot Spare: Express Configuration defines one of the four 4300 MB
drives as a hot-spare drive, as follows:
Ÿ
When there are four or more Ready drives of the
same capacity, Express Configuration groups three
of the drives into one array (as in Array C) and
defines one of the drives as a hot spare.
Chapter 3. Using the Configuration Programs
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