Drive Upgrade Plan

[Kismet]

One of my drives is starting to give consistent read/write errors and I need to replace it.  Since all of my drives are about the same age and I recently swapped out all the other hardware when I started using unraid, I thought I'd just replace them all.  Right now I've got two 3TB drives and two 2TB drives, although I'm only using 3TB total at the moment.  My plan is to replace all of them with three new 3TB drives.  My plan is to do the following:

 

1) Copy all data from one 2TB drive to the other (there is space for this), remove the 2TB drive I copied from and rebuild parity.

2) When new drives come in, replace 3TB data drive with a new drive and then have the array rebuild it.

3) Replace remaining 2TB with a new drive, and rebuild it.

4) Replace parity drive.

 

Just wanted to make sure I'm not missing anything important or if there is a better way to go about it?

[ashman70]

Why would you replace them with drives that are the same size as your largest drive? I would get the biggest drives you can afford and start upgrading with those. I believe the sweet spot for cost/TB is 4TB right now, but I guess that depends on what part of the world you live in.