Managing Spares - Adaptec DuraStor 7220SS User Manual

Managing Spares

In This Chapter
Managing Dedicated Spares
Enabling Dynamic Spares
Managing the Spare Pool
DuraStor RAID controllers automatically reconstruct redundant
(fault-tolerant) arrays (RAID 3, RAID 4, RAID 5, RAID 50, and
mirrored) if an array becomes critical and a proper-size spare disk
drive is available. An array becomes critical when one member
disk drive fails.
You can set up two types of spare disk drives:
Dedicated—Available disk drive that is assigned to a specific
I
array (see page
Pool—Available disk drive that is assigned to the spare pool,
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which can provide a spare for any failed disk drive in any
redundant array. In active-active mode, pool spares are available
to both controllers. If a disk drive in an array on either controller
fails, the controller can use a pool spare to reconstruct the array
(see page 4-5).
You can also enable the Dynamic Spares function. (See
4-2).
4
4-2
4-3
4-5
page 4-3.)
4-1