How To Repace A Failing Hdd In A 3ware RAID 1

we use 3Ware's 8006-2LP sata raid controller in each of our servers for RAID1. Our servers are all Supermicro boxes with hot-swap driver carriers (ie. the 2 raided drives are in them)

One of the drives appears to be starting to crap itself as smartd is reporting issues (although tw_cli c0 shows the raid to be OK) incl. multi zone errors.

Anyway, I'd like to replace the failing drive before it becomes a real issue so i've bought a replacement (74gb raptor, just like the original) drive.

Now I've never had to replace a failing drive in any of our servers before and I used to think it would be a simple matter of simply popping out the failing drive's carrier, put the new drive in the carrier and stick it back in the server... and the raid controller would do the rest.

Yes a little naive I know but i've never had to do it before so never paid much attention .. Anyway, I've just read and re-read the 3ware docs for my controller and their instructions are VERY VAGUE ... however I do get the feeling that the process is move involved ie. I need to tell the controller (via cli or 3dm) to first 'remove' the failing drive from the raid ..and then add a new drive and then rebuild

However there is one catch .. 3dmd/3dm2 has NEVER worked on our (centos 4) servers - 3dmd crashes regularly and 3dm2 never worked. So yes I am stuck with the 3ware cli ... which I don't mind as long as someone can tell me the sequency of commands I need to issue

As this point I'm thinking what I need to do via cli is

1) tell raid controlloer to remove the failing drive on port 0

2) eject the drive carrier with the drive in question

3) insert new drive in carrier and re-insert into server

4) using tw_cli tell the controller to add the new drive to the array and to rebuild the array

Am I anywhere close to being correct? I'm sure there are some of you out there who've done this countless times before with the 3ware controllers and hotswap drive carriers ..