Well, it is unlikely then that BOTH disks physically failed in such a relatively short amount of time (but not impossible), so it is likely you are looking at a logical failure of the array.  I would proceed with a backup first, then the consistency check and chkdsk /r, then another backup, then remove the disks, insert the new ones and configure/initialize a new RAID array, then restore from backup and hopefully your backup is good enough.
Hi All, I have a poweredge 2850 with both OS drives (RAID 1 array) flashing Green/Amber.  Looking at Open Manage I see that both drives are "Predicted" to fail.  I have some spare 146GB 10K Ultra 320 SCSI drives from a retired server that match the drives in this server.  My question is, since both drives technically have not yet failed, what is the proper way to replace them and can it be done without downtime?  My initial thought is to pull Drive 1 and replace, then wait for it to sync and then pull Drive 0 and replace.  Thoughts?   
Both RAID 1 Drives are "Predicted" to Fail! How to best resolve?