Asus M3A78-EMH HDMI User Manual download pdf (Page 110)

RAIDXpert User Manual

104

If any of the physical drives in your logical drive were previously used in other

logical drives, or you are not sure, choose Full Initialization

Hot Spare Drive(s)

A hot spare is a physical drive that is connected to the logical drive system but is

not assigned as a member of the logical drive. In the event of the failure of a drive

within a functioning fault tolerant logical drive, the hot spare is activated as a

member of the logical drive to replace a drive that has failed.

The AMD SB6xx/SB7xx Controller will replace a failing physical drive in a logical

drive with an unassigned drive, if one is available. The unassigned drive is not

part of any logical drive. Such a drive is called a hot spare drive. There are two

types:

• Global – The spare drive is available to any logical drive on the Host PC.

• Dedicated – The spare drive can only be used by the specified logical drive.

The hot spare policy function lets you select whether a logical drive will access

any unassigned physical drive or a designated drive in the event of physical drive

failure. See “Rebuilding a Logical Drive” on page 77 and “Creating a Spare Drive”

on page 90 for information.

The spare drive effectively takes the place of the failed drive and the RAID

system immediately begins to rebuild data onto the spare drive. When the rebuild

is complete, the logical drive returns to fault tolerant status.

Maintaining a hot spare drive is a good precaution to protect your logical drive

integrity in the event of physical drive failure.

Partition and Format the Logical Drive

Like any other type of fixed disk media in your system, a RAID logical drive must

also be partitioned and formatted before use. Use the same method of

partitioning and formatting on a logical drive as you would any other fixed disk.

See “Appendix B: Partition and Format” on page 111.

Migration

Migration is the process of:

• Changing the RAID level of an existing logical drive

• Adding more physical drives to a logical drive while keeping the same RAID

level

See “Migrating a Logical Drive” on page 73 for instructions how to migrate a

logical drive.

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Asus M3A78-EMH HDMI User Manual Page 110