(SOLVED) Replace a failed hard drive with a smalller one after copying everthing to new drive

[huminsk]

Hi all,

 

One of my 12TB drive(disk 7) failed , I am trying to replace it with a smaller one(11.8 TB, diskX).

 

I have done the following：

1. Set disk 7 to "no device"

2. Mount disk 7 and the new diskX via ssh

3. Copied all folders from disk 7 to DiskX using "cp -vR"

   Not sure if it is a better way to do this, like copy files from "emulated array drive" instead of the failed physical hard drive

 

My plan is to performe a "new config" procedure as blow:

1. Run array new config, keep everything else except disk 7 assginment.

2. Set the new DiskX as disk 7.

3. Rebuild the parity.

 

Is it ok to do so? Thank you!

 

 

 

Edited July 24 by huminsk

[trurl]

In what way did the disk fail? Bad connections are more common than bad disks. Can you get a SMART report from the disk?

[huminsk]

22 minutes ago, trurl said:

In what way did the disk fail? Bad connections are more common than bad disks. Can you get a SMART report from the disk?

 

trurl, thanks for replying. S.M.A.R.T report and syslog uploaded. 

 

The symptom is UNRAID reported thousands of Read Errors on disk 7 and then disabled it. 

It makes funny noise during unmount phase of stopping array(Maybe it still could be a cable issue related to power connector?). I will try the failed drive when I get the new cable.

 

35000cca2594f2e2c-2024-02-15 disk7 (sdm) - DISK_DSBL.txt syslog.txt

[itimpi]

The fact you indicated 'funny noises' suggests to me either the drive really is failing, or alternatively it is getting insufficient power.

 

Running the Extended SMART test is a good indication of a drive's health.  If it passes then the drive is probably OK, and a failure normally means it should be replaced.

[trurl]

12 hours ago, huminsk said:

copy files from "emulated array drive" instead of the failed physical hard drive

If the disk is really failing copying from the emulated disk might be better.

[huminsk]

On 7/22/2024 at 6:35 PM, itimpi said:

The fact you indicated 'funny noises' suggests to me either the drive really is failing, or alternatively it is getting insufficient power.

 

Running the Extended SMART test is a good indication of a drive's health.  If it passes then the drive is probably OK, and a failure normally means it should be replaced.

 

On 7/22/2024 at 11:10 PM, trurl said:

If the disk is really failing copying from the emulated disk might be better.

 

Two more hard drives reported Read Error when rebuilding data. All these 3 drives were connected to a same Molex MiniSAS-SAS cable.

I have changed the cable and rebuilt the data of the "failed" disk, so far so good.  So it was a cable issue as you guys suspected.

Thank you for your help.  @trurl @itimpi