Hi All,

 

Unraid 6.11.5

 

I know it is possible to move drives around but I better ask first if this is just as easy

 

I have 6 drives, all 8TB

I have two drives that are Seagate Ironwolf CMR drives

I wanted, and thought I had installed it, so that the CMR drives would be 1) Parity and 2) Largest data drive

 

I see now that the Parity drive and Drive 1 are both regular Baracuda drives SMR

 

How can I swap them around so that the Parity and Drive 1 are the CMR drives?

 

Thanks!  

Edited January 9, 20233 yr by sfleck

If there's no data on the array you can do a new config (Tools -> New config)

Array is holding 4TB of data of 40TB total available. So, about 10% full

Drive 1 is also showing errors. 

 

So, I do have data 

You must first backup the data then, or is disk1 going to remain as a data disk? Though if there are errors you need to solve that first.

The current Disk 1 (with errors) will not remain as Disk 1

Currently the CMR drives are Disk2 and Disk3

I would like the data on Disk1 to go to Disk2 and move Disk3 to the Parity position

 

That would make Parity and Disk1 the CMR drives 

Oh, and both Disk2 and Disk3 currently have NO data on them.

Can I follow this video:

... and move all the data from Disk1 to Disk2 using unbalance 

Then, I would need to know how to remove the Parity drive, replace it with the CMR drive and then rebuild the Parity disk 

Please post current diags first to see array status.

I started the process of moving the data from Drive1 to Drive2 using Unbalance

 

Diagnostics attached

scytale-diagnostics-20230109-1235.zip

You should then run an extended SMART test on disk1 sine it appears to be failing.

Will do, thanks JorgeB.

 

My plan is to get the data off the drive (Disk1) on to Disk2

physically remove the drive (Disk1),

swap the current parity drive to the 2nd CMR drive once the data is in place (not sure how yet ... but I have 40 hours to research as data moves),

then reinstall the "bad" Disk1 drive and try to preclear it to see just how bad it is. If it's really done then I will toss it.

 

 

16 minutes ago, sfleck said:

My plan is to get the data off the drive (Disk1) on to Disk2

physically remove the drive (Disk1),

swap the current parity drive to the 2nd CMR drive once the data is in place (not sure how yet ... but I have 40 hours to research as data moves),

After you get the data onto the data disk(s) you want to keep in the array, you can New Config, reassign disks as you want including leaving out any such as that suspect disk, then rebuild parity. Then you can work on that suspect disk separately as an Unassigned Device.

I did as you suggested.

Drives i want to keep are now allocated and parity is rebuilt and good and all drives in the array are good.

 

The suspect disk, 8tb seagate barracuda, had 744 reallocated sectors before the preclear and that number increased by 24 to 768 reallocated sectors. The drive has 15,830 hours on it now. Should I assume it will continue to degrade or should the fact that it successfully finished the preclear give me confidence?

 

I bought this HDD in a lot of 4 8tb identical drives on eBay, basically paying $75 for each. Is there any point in keeping this one? Certainly don't plan to use it in the array, but can it be added somehow outside the array and used in some other capacity?  

Edited January 16, 20233 yr by sfleck

I don't think I would bother with it anymore