[CentOS] Mount removed raid disk back on same machine as original raid

Wed Mar 8 20:45:24 UTC 2023
Bowie Bailey <Bowie_Bailey at BUC.com>

I have a Centos 7 system with an mdraid array (raid 1).  I removed a 
drive from it a couple of months ago and replaced it with a new drive.  
Now I want to recover some information from that old drive.

I know how to mount the drive, and have done so on another system to 
confirm that the information I want is there.

My question is this:

What is going to happen when I try to mount a drive that the system 
thinks is part of an existing array?

To put it another way:  I had two drives in md127.  I removed one (call 
it drive1), and replaced it with a new drive.  Some files were 
accidentally deleted from md127, so now I want to connect drive1 back to 
the same machine and mount it as a separate array from md127 so I can 
copy the files from drive1 back to md127.  What do I need to do to make 
that happen?

Thanks,

Bowie