Specifications

79MSA1000 Reference Guide

Recovering from Hard Drive

Failure

Caution: Back up all data before removing drives or changing configurations.

Failure to do so could result in permanent loss of data. Before moving drives

and arrays, run the Array Configuration Utility.

The purpose of fault-tolerant configurations on the MSA1000 Controller is to

protect against data loss due to drive failure. Although the MSA1000 Controller

firmware is designed to protect against normal drive failure, it is imperative that

you perform the correct actions to recover from a drive failure without

inadvertently inducing any additional drive failures. Multiple drive failures in the

same array generally result in data loss (exceptions include failures following

activation of a spare drive, and failure of drives in a mirroring configuration that

are not mirrored to one another or Advanced Data Guarding configuration).

Drives may be either Ultra2, Ultra3, or Ultra320 Pluggable Universal Hard Disk

Drives. Drives that are to be grouped in the same array should be of the same

capacity. The excess capacity of a larger drive cannot be used by the array and will

be wasted.

A list of supported hard drives is available at