NT 4.0 server hard drive failure

Disk manager says drive 3 failed in array. Log files say a drive failed and will no longer be used. Adaptec 2940 card’s utilities says all drives fine after running verify drives.

Drive format is NTFS, so scan disk is not an option to check drive with.

This is a Seagate drive that is ~1.5 years old. Is this a bad drive or is it a Windows software raid issue? If windows issue, how do I reactivate/recover the drive? If drive is bad, how can I tell if it is scsi drive 1 or 3?