Add capacity to a pool or volume group

You can add drives to expand the free capacity in an existing pool or volume group. The expansion causes additional free capacity to be included in the pool or volume group. You can use this free capacity to create additional volumes. The data in the volumes remains accessible during this operation.

Before you begin

About this task

For pools, you can add a maximum of 60 drives at a time or up to 60 drives through multiples of 5. For volume groups, you can add a maximum of two drives at a time. If you need to add more than the maximum number of drives, repeat the procedure. (A pool cannot contain more drives than the maximum limit for a storage array.)

Note: With the addition of drives, your preservation capacity may need to be increased. You should consider increasing your reserved capacity after an expansion operation.
Note: Avoid using drives that are Data Assurance (DA) capable to add capacity to a pool or volume group that is not DA capable. The pool or volume group cannot take advantage of the capabilities of the DA-capable drive. Consider using drives that are not DA capable in this situation.

Procedure

  1. Select Storage > Pools & Volume Groups.
  2. Select the pool or volume group to which you want to add drives, and then click Add Capacity.

    The Add Capacity dialog box appears. Only the unassigned drives that are compatible with the pool or volume group appear.

  3. Under Select drives to add capacity..., select one or more drives that you want to add to the existing pool or volume group.

    The controller firmware arranges the unassigned drives with the best options listed at the top. The total free capacity that is added to the pool or volume group appears below the list in Total capacity selected.

  4. Click Add.

    If you are adding drives to a pool or volume group, a confirmation dialog box appears if you selected a drive that causes the pool or volume group to no longer have one or more of the following attributes:

    • Shelf loss protection
    • Drawer loss protection
    • Full Disk Encryption capability
    • Data Assurance capability
    • DULBE capability

    To continue, click Yes; otherwise click Cancel.

Result

After you add the unassigned drives to a pool or volume group, the data in each volume of the pool or volume group is redistributed to include the additional drives.