Proper procedure to upgrade hdds

[pras1011]

I am upgrading from 4 x 18tb to 4 x 20tb hdds. I am not running preclear on the new drives. (Should I run preclear on all drives?)

 

Is this procedure correct:

 

1) parity check

2) remove 18tb parity and insert 20tb parity

3) parity rebuild

4) parity check

5) remove 18tb hdd1

6) insert 20tb hdd1

7) data rebuild

remove 18tb hdd2

9) insert 20tb hdd2

10) and so on

 

Is this correct?

 

Is there anything I can do to make this faster?

[peterg23]

1.  Your new parity must be a 20TB drive.

2.  I preclear all new drives I put in my array. It's optional - but recommended.

3.  Assuming the 18TB drives are working ok, it hardly seems worth all the trouble going from 18TB to 20TB.

Edited October 9, 2023 by peterg23

[pras1011]

1. Yep!

2. Damn it!

3. I know, but I got a really good deal on the 20tb and I sold my 18tb for a good price. And I will be moving from a 5 bay case to a 4 bay qnap case. 

 

Is the upgrade procedure correct?

[pras1011]

I have 5 hdds but I will move down to 4 hdds once I moved the data off of the last hdd. I am also moving from a 5 bay down to a 4 bay server. 

 

Once the data is moved can I click New Config in the 5 bay server and then discard the unwanted hdd and then put the remaining 4 hdds into the 4 bay and assign slots and start server?

[itimpi]

That is basically the standard procedure for shrinking the array as defined here in the online documentation accessible via the ‘Manual’ link at the bottom of the GUI or the DOCS link at the top of each forum page. The Unraid OS->Manual section in particular covers most features of the current Unraid release.

[pras1011]

OK thanks. 

 

Should I run New Config in the old server and then power down without assigning drives or move the drives to the new server and then run it?