Acer Altos R360 F2 Frequently Asked Questions Manual page 65

Altos R360 F2 FAQ (Frequently Asked Questions)
22. The MegaRAID is configured with 2 x HDD as RAID 1 without hot spare. But, when I removed one HDD and
inserted the original HDD back, the RAID cannot be rebuilt automatically. In the RAID Utility, it indicates the
HDD as (Foreign) Unconfigured Good.
ANSWER: Please insert a new HDD which was not configured as RAID. Or, please install the original HDD into ANSWER: ANSWER: ANSWER:
another RAID card and clear/delete its RAID configuration before you insert it into the degraded RAID.
That is, if the HDD is new or has not been configured as RAID, the RAID can be rebuilt automatically.
If you re-plug back the original removed HDD, RAID card will detect "Foreign" RAID configuration on that
HDD. In that case, RAID card will wait for user to confirm next step. Then, you need to follow below
procedure to manually rebuild the RAID.
a. Please launch the RAID utility.
b. Right click the HDD marked as "(Foreign) Unconfigured Good" and select Replace Missing Drive
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Replace Missing Drive Replace Missing Drive. Replace Missing Drive