Hello dodinh, Since you state that when you look into MDSM that all the drives are showing as optimal then you should be able to do a recheck from in the recovery guru & have it check to confirm that all drives are online & optimal.  If after you run the recheck if it list any drive as still having any issues then what I would do is to check MDSM again & confirm that the drive is showing as failed.  The error normally clears once a drive has been replaced but in some cases I have see it need to run the recheck to clear the error from the recovery guru.   Please let us know if you have any other questions.
We recently replaced a failed HDD in our MD3000i. After letting it rebuild, all drives are at optimal status again. But Recovery Guru still gives this error: Individual Physical Disk - Degraded Path Degraded physical disk paths: Channel : 0 Related physical disks: (Unknown) Can I safely press "Recheck", or what would be the procedure I'd have to follow to get rid of this error?
MD3000i Individual Physical Disk - Degraded Path