This section explains how to expand a RAID by adding segments to it.
IMPORTANT:Before you can expand the size of a RAID device, you must deactivate it.
In a RAID 1 device, each member segment contains its own copy of all of the data stored in the RAID. You can add a mirror to the RAID to increase redundancy. The segment must be at least the same size as the smallest member segment in the existing RAID 1 device. Any excess space in the segment is not used. Ideally, all member segments of a RAID 1 device are the same size.
Deactivate the RAID 1 device.
Use the Add Active (addactive plug-in) function.
From the list of available segments, select one that is the same size or larger than the smallest existing member of the RAID device.
Reactivate the RAID device.
If you have not set up a spare disk, do it now.
For information, see Section 6.4, Adding or Removing a Spare Disk.
Use the Activate Spare (activatespare plug-in) function to add it to the RAID 1 device as a new mirror.
If the RAID region is clean and operating normally, the kernel driver adds the new object as a regular spare, and it acts as a hot standby for future failures. If the RAID region is currently degraded, the kernel driver immediately activates the new spare object and begins synchronizing the data and parity information.