Expanding Unit Capacity

You can expand a unit's capacity by adding one or more drives to it without changing the RAID level, except for singles and RAID 1 units. (Since a single can only have one drive, and a RAID 1 can only have two drives, if you add a drive to either, the RAID level must be changed.)

Expanding unit capacity can be accomplished while the unit is online, without experiencing any data loss. This process is also referred to as Online Capacity Expansion (OCE).

1	In 3DM2, choose Management >> Maintenance.

2	In the Unit Maintenance table on the Maintenance Page, select the unit you wish to expand by checking the box next to the Unit ID.

3	Click the Migrate Unit button.

4	Select the drives(s) you wish to add to the unit by checking the Port ID box next to each one.

5	If desired or necessary, select the appropriate RAID level.

7	If you booted from the unit that is being migrated, when migration is complete, reboot your system. Then turn to Step 4 under Informing the Operating System of Changed Configuration.

8	After the migration is complete, inform the operating system of the change, as described under Informing the Operating System of Changed Configuration.

Related Topics: RAID Level Migration (RLM) Overview; Changing An Existing Configuration by Migrating; Changing RAID Level; Informing the Operating System of Changed Configuration