EVGA Z490 FTW User Manual page 72

EVGA Z490 FTW (122-CL-E497)
Repairing an array within UEFI
This guide will show you how to repair a degraded array from within the UEFI. For
testing purposes, a drive was intentionally removed from a RAID5 array and wiped to
guarantee that the array rebuild behaved the same as if a new replacement drive was
added to a degraded array.
If a drive fails and the array becomes degraded, you will typically see an alert in
Windows, during the controller booting (Legacy mode only), or while checking the array
status within UEFI. If a drive fails in an array with redundancy (a RAID5 array, in this
case), the controller will report the array as "Degraded" (see pic below). This means that
the array has a node down, the data is still intact, but your fault tolerance is reduced.
Highlight the degraded array with your mouse or navigate to it with your keyboard and
select it to bring you into the array screen (see image on next page), which will show you
your array status and any drives that are not currently configured in a RAID array. The
Non-RAID Physical Disks list will display any remaining drives on the controller,
whether it is a random storage drive, a boot drive, or a replacement drive installed to
replace a failed unit. For this example, you will see a degraded array and a "Non-RAID
Physical Disk," which we've attached to repair the degraded array.
The drive attached is an exact match to the other drives in our RAID 5; however, you
can use a different drive if it is the same size and preferably same type/series, as well.
**ALL DATA ON THAT DRIVE WILL BE REMOVED AND WILL NOT BE
RECOVERABLE WHEN ADDING IT INTO THE ARRAY**
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