I received a warning from one of my UnRAID machines a couple of days ago, but this is the first chance I have had to take a look. The error is;

 

Event: Unraid Cache disk SMART health [5]
Subject: Warning [UNRAID] - retired block count is 12
Description: SanDisk_SDSSDX48_124136400481_35001b447f2b02261 (sdg)
Importance: warning

 

I am guessing that this is the end of the road for this disk and am planning to order a replacement ASAP as there are some VMs on here I don't want to lose.

 

Is there a set procedure to replace the disk and migrate everything from it to the new disk, or should I use something like Clonezilla?

 

I plan to order a 500Gb (ish) SSD to replace this as the current one is a 480Gb Sandisk SSD.

 

Any guidance appreciated.

 

Thanks

Edited April 21, 20251 yr by SliMat

Which filesystem is the pool using?

Hi @JorgeB

 

Its using btrfs.

 

I changed the storage assignment last night from primary - cache, secondary - array to primary - array and invoked mover, expecting it to move appdata, systems & VMs from the cache disk to the array, to reduce the risk of data loss - but it seems that nearly all are still on the cache disk! Am I missing something? There is lityerally 2 folders showing as currently on an array disk.

 

Thanks

Edited April 22, 20251 yr by SliMat

Make sure you don't have the mover tuning plugin installed, you can also take a look here:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/#findComment-511923

 

3 minutes ago, JorgeB said:

Make sure you don't have the mover tuning plugin installed, you can also take a look here:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/#findComment-511923

 

I looked in the plugins section and dont see any mover plugins installed. As I am out now, I just started making a copy of the folders on the cache disk to the array in Midnight Commander. So, hopefully I'll at least have a backup if the disk fails completely. I will order a new disk and then perhaps copy the folders back, or maybe it is better to set it up as a second cache disk and migrate - although it may be 512Gb whereas the original is 480Gb.

2 hours ago, SliMat said:

Hi @JorgeB

 

Its using btrfs.

 

I changed the storage assignment last night from primary - cache, secondary - array to primary - array and invoked mover, expecting it to move appdata, systems & VMs from the cache disk to the array, to reduce the risk of data loss - but it seems that nearly all are still on the cache disk! Am I missing something? There is lityerally 2 folders showing as currently on an array disk.

 

Thanks

Your original settings were correct as long as you had the mover direction to be cache->array.  Mover takes no action on any share that only has Primary storage set.  You would also need Docker and VMs disabled in Settings as these keep files open which prevents them being moved.

 

You could also move these manually using Dynamix File Manager which is built into Unraid 7.

11 hours ago, itimpi said:

Your original settings were correct as long as you had the mover direction to be cache->array.  Mover takes no action on any share that only has Primary storage set.  You would also need Docker and VMs disabled in Settings as these keep files open which prevents them being moved.

 

You could also move these manually using Dynamix File Manager which is built into Unraid 7.

Perfect, forgot to set mover direction to cache->array... once I set this everything moved onto the array... so will just unassign & replace cache disk. Thanks