The Dell PERC RAID Configuration BIOS will mark an Array as “Foreign” under the following circumstances:
- The entire Array has been moved across from another server (and therefore the RAID Card has no knowledge of the Array)
- There has been a “glitch” on the RAID Card and the configuration has lost details of the existing Array(s) that are attached to it.
Essentially, the BIOS is indicating that it has found an array that is it has no knowledge of. In this circumstance, you would most likely wish to “Import” the array. In order to do this, the status must be either:
- Ready (including any hot spares) or
- Degraded (part of the Mirror is missing)
DO NOT “Clear the Foreign Configuration”, unless you wish to completely erase all the data on the Disks!