Disk management

System Manager includes several features that help you to create an aggregate from selected disks, add spare disks to an existing aggregate, or remove selected spare disks.

You can select the individual disks you want to use to create an aggregate by scrolling through the list of available disks in the Create Aggregate dialog box. You must select at least two disks (one data disk and one parity disk) for RAID-4 and at least three disks (one data disk, a regular parity disk, and a double-parity disk) for RAID-DP.

Three kinds of disks are available for the storage system's file system:

Data

Holds data stored on behalf of clients and data generated about the state of the storage system as a result of a malfunction.

Hot spare

Does not hold usable data, but is available for addition to an aggregate. You can also add a hot spare disk to an aggregate by adding the disk to a traditional volume contained by the aggregate.

Parity

Stores data reconstruction information.