5.2.2Creating Hot Spares
Any drive that is present, formatted, and initialized, but is not included in a array or logical drive is automatically designated as a hot spare.
You can also designate drives as hot spares using the MegaRAID BIOS Configuration Utility, the MegaRAID Manager, or Power Console Plus. See the MegaRAID Configuration Software Guide for additional information.
5.3Creating Logical Drives
Logical drives are arrays or spanned arrays that are presented to the operating system. You must create one or more logical drives.
The logical drive capacity can include all or any portion of an array. The logical drive capacity can also be larger than an array by using spanning. The MegaRAID SCSI
5.3.1Configuration Strategies
The most important factors in RAID array configuration are: drive capacity, drive availability (fault tolerance), and drive performance. You cannot configure a logical drive that optimizes all three factors, but it is easy to choose a logical drive configuration that maximizes one factor at the expense of the other two factors, although needs are seldom that simple.
5.3.1.1Maximize Capacity
RAID 0 achieves maximum drive capacity, but does not provide data redundancy. Maximum drive capacity for each RAID level is shown below.
Configuring Physical Drives, Arrays, and Logical Drives |
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