Disk protection

 

It is important to protect all the disk units on your system with either device parity protection or mirrored protection. This prevents the loss of information when a disk failure occurs.

In many cases, you can keep your system running while a disk unit is being repaired or replaced. Your system can continue to run in the following scenarios:

• If a disk failure occurs in a disk pool that has mirrored protection.

• If one disk unit in a parity set fails with RAID 5.

• If two disk units in a parity set fail with RAID 6.

• Comparing disk protection options
  You should be aware of these considerations when selecting disk protection options.

• Protecting data on disk units
  To obtain optimal data protection, use iSeries™ Navigator to protect all the disk units on your system with either device parity protection or mirrored protection.

• Disk protection types
  Plan which methods you need to use to protect your data.

• Disk protection checklists
  There are checklists that you can use for disk protection tasks.

 

Parent topic:

Disk management

Related concepts
Basic disk pools