Repair permanately degraded RAID

What is the interface on the drives?

Have you tried looking at the drive with a non-RAID controller do see if it is readable?

There SATA, but why would I need the bad drive in a RAiD 1?  Why can't I just rebuild with a new drive.

Take a backup - if you havent already!
What is the model of the RAID controller in this server?

Looking at this info
https://support.dell.com/support/edocs/storage/Storlink/H200/en/UG/HTML/bio.htm
Permanently degraded means that there are problems with both disks in the RAID 1 or that the RAID controller doesnt recognize or cant use the replacement disk for some reason?

Remove the replacement drive
Check it is the same model, speed & size as the old one
Check it has the same firmware as the other drive in the RAID 1
Run a quick disk wipe (using a disk tool like Killdisk) on it to make sure there is no existing RAID config or anything on the replacement drive that would stop the PERC from rebuilding the RAID 1 using this drive.
If the new drive is completely "blank" the PERC should start rebuilding the array automatically.

I would use the boot RAID config utility [CTRL] + [R] for replacing the drive. The instructions may vary depending on the model of PERC you are using.
Please post the PERC model and we can go from there.

If the replacement drive has existing RAID config on it you will have to use the "Clear foreign config" option in the RAID config utility before the drive can be used to rebuild your RAID 1.
(Be careful to select the right drive!)

Otherwise the PERC looks at the drive and sees some other RAID config and wont overwrite that RAID config because it doesn't know if you want to keep it or not - kind of a safety measure!

Removing the drive and running a quick wipe on it is another way to make sure the drive is completely "blank"

I will try wiping the disk, but it is a brand new OEM drive.  I found that the drive is not the exact same model, but it is the same make and very similiar.  Although it's not recommended, I thought you could use dissimiliar drives in a raid 1 config.

What's the drive models?

Had a major issue with Samsung RAID drives.

Although they were on the list of approved drives,there was a slight variation in one of the model numbers that would cause it not to be detected occasionally by the controller.

Worked fine as a standalone,but when mixed with the others,would not post in the RAID BIOS correctly.

You can use dissimilar drives but its not recommended.
Ideally you want the size, speed, model and firmware to be the same as the other drive in the RAID 1
What is the model of the RAID controller you are using?
Are there any firmware updates for the RAID controller?

If the server is under support and you got the replacement drive from Dell then they should provide you with tech support to get this sorted.

Dell is sending 2 new drives because they said there are bad blocks on both drives.  What's the easiest way to do this, can I create an image of the working drive (even though it has bad blocks) and image one of the new drives?

Depending upon software,you should be able to make image,but if there is a bad block where a program resides it might be corrupted.

Dell sent me 2 replacement drives.  I am imaging the working drive to a replacement and will build a new array.