Custom Configuration - HP D5970A - NetServer - LCII Installation And Configuration Manual

Chapter 4

Custom Configuration

To plan a custom configuration, you will do the following:
Plan your arrays
Plan hot spares
Decide the rebuild rate
Plan logical drives

Plan Your Arrays
In this section you specify which physical drives are assigned to which arrays.
For each physical disk drive that is assigned to an array, log its array number in
Worksheet A.
When creating your arrays, please consider the following:
Group together physical drives that have the same capacity. (If you use
drives with different capacities in an array, all the drives in the array are
treated as though they have the capacity of the smallest drive.)
Arrays are numbered sequentially beginning with Array 0.
Arrays can have between one and eight physical drives per array.
The more disks you group together in an array, the better the
performance.
All physical drives in an array must be controlled by the same adapter.
The physical drives in an array can be all on the same channel, or they
can be on separate channels.
You might plan to reserve one or more physical drives for use as a hot
spare. See "Plan Hot Spares (Optional)" later in this chapter for more
information.
When you create your arrays, you should look ahead toward the logical drives
that you will configure later. (Logical drives are discussed in "Plan Logical
Drives" later in this chapter.) Here are some considerations about logical drives
that might impact how you set up your arrays:
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Planning