Including disk units in a parity set
When you attach a new disk unit to an existing IOA that has device parity protection, you can include the disk unit into an existing parity set with other disk units.
If you want to include a disk unit in a parity set and the disk units of that parity set are in an independent disk pool, the independent disk pool must be varied off. For all other disk pools, you must restart your system to dedicated service tools (DST) mode before you can include them in a parity set.
Adding three or more disk units requires you to create a new parity set. The include function does not work to create a parity set. To create a parity set, go to Start device parity protection.
For a Small Computer System Interface (SCSI) IOA, the disk units to include must be the same capacity as the other disk units in the parity set. For a Serial Attached SCSI (SAS) IOA, the disk units to include can be the same capacity or larger than the other disk units in the parity set
To include a disk unit in a parity set using your IBM® Navigator for i, follow these steps:
- Select Configuration and Service from your IBM Navigator for i.
- Select Disk Units.
- Select the disk units that you want to include.
- Right-click the selected disk units and select Include in Parity Set.
- From the dialog box that is displayed, select Include to include the selected disk units in a parity set.