Using windows backup to replace an old disc

Hi,

My 2008 R2 server has an old SATA disc with two primary partitions:

data on one partition and WSUS on the other.

Currently the data partition is backed up nightly but the WSUS partition is not backed up

I know it's a single point of failure and since the disk is very old I want to replace it with a new disc rather than wait for it to fail and then be in a rush to fix it.

Whats is the best way to go about this e.g. I was thinking

1. amend the nightly backup to include the WSUS partition

2. remove old disk (it's in a " hot swap caddy")

3. fit new disk in same slot as old one

4. format / partition (needed ?)

5. recover partitions from windows backup to new disk

What do you think ?