Chapter 7. Storage pools 229
The internal drives in the IBM Storwize V7000 storage system can be assigned to several
usage roles, which either can be unused, candidate, spare, or failed. The meanings of
these roles are:
– Unused: The drive is not member of an MDisk (array).
– Candidate: The drive is available for use in an array.
– Spare: The drive can be used as a hot spare if required.
– Failed: The drive was either intentionally taken offline or failed due to an error.
Click Mark as... in the Actions drop-down menu, and select the role you want the drive to
be assigned to (Figure 7-7).
Figure 7-7 Change a drive’s usage
Use the Identify action to turn on the LED light so you can easily identify a drive that
needs to be replaced, or that you want to troubleshoot.
Internal drives: Choosing the option to take internal drives offline, even though
redundancy is lost on the array, could lead to potential data loss.