(Solved) Can I replace 2 parity drives the same time?

[Harro]

I just purchased 2 10TB drives. These 10's would replace the 8TB drives I have now as parity. Can I do both at one time or do I need to replace just one at a time. 

 

I figure if anything goes wrong I would have the original to fall back on.

Thanks

Curt

Edited January 4, 2019 by Harro

[JonathanM]

You certainly can rebuild both at once, however, the safest option would be one at a time, with a correcting parity check showing zero errors after each replacement.

 

Totally up to you how much risk you want to endure.

[Harro]

26 minutes ago, jonathanm said:

You certainly can rebuild both at once, however, the safest option would be one at a time, with a correcting parity check showing zero errors after each replacement.

 

Totally up to you how much risk you want to endure.

I have attached my log for parity checks. Not that it would make a difference but with over a year of checks with no errors, what percentage would you say are my chances of doing both compared to one at a time?

parity-checks.log

[trurl]

12 minutes ago, Harro said:

I have attached my log for parity checks. Not that it would make a difference but with over a year of checks with no errors, what percentage would you say are my chances of doing both compared to one at a time?

parity-checks.log

Current SMART for all disks would likely be a better indicator than past parity logs.

[Harro]

8 minutes ago, trurl said:

Current SMART for all disks would likely be a better indicator than past parity logs.

I would imagine the extended test would be the go to instead of a short. I do think I have both on most of the drives. 

[trurl]

8 minutes ago, Harro said:

I would imagine the extended test would be the go to instead of a short. I do think I have both on most of the drives. 

Extended SMART test will take many hours.

 

I just meant the SMART reports which you can easily get by clicking on a disk and looking at its attributes, and you can page through all disks attributes with the arrows.

 

Or just look at the Dashboard. If none of the disks is showing a yellow triangle warning then that means Unraid considers them to have good SMART.

[Harro]

Well according to my smart reports which I downloaded from the Diagnostics report and from my dashboard , all looks good. But I think I will take all dockers offline and replace one at a time just to be on the safe side. Thanks for all the info .