Introduction to RAID : RAID Components and Features : Drive States

Drive States

A drive state is a property that indicates the status of the drive. The following table describes the drive states.

Table 5. Drive States

State

Description

Online

A drive that can be accessed by the Nytro MegaRAID controller and is part of the virtual drive.

Unconfigured Good

A drive that is functioning normally but is not configured as a part of a virtual drive or as a hot spare.

Hot Spare

A drive that is powered up and ready for use as a spare in case an online drive fails.

Failed

A drive that was originally configured as Online or Hot Spare, but on which firmware detects an unrecoverable error.

Rebuild

A drive to which data is being written to restore full redundancy for a virtual drive.

Unconfigured Bad

A drive on which firmware detects an unrecoverable error; the drive was Unconfigured Good or the drive could not be initialized.

Missing

A drive that was Online, but which has been removed from its location.

Offline

A drive that is part of a virtual drive, but which has invalid Nytro MegaRAID configuration data.