Hello everybody !

 

My unraid server has 8 HDDs + 2 parity disks.

All was working without any problem.

I have noticed that disks don't spin down often and then i have checked and modified some settings in applications to avoid scanning accesses on disk and use more efficiently the cache.

 

Now disk spins down and consumption has been reduced for more that a half.

 

i was happy .....

 

BUT (always a but), i have some disk errors that appear. And i don't know if it could be linked to spin down / up ? (device not ready for access on spin up => read error ??)

 

before spin dw/up optimizations, i never face disk errors ...

 

join to the post diagnostics.

 

regards

 

 

 

 

diagnostics-20231215-0756.zip

Edited December 15, 20232 yr by nunu22

Avoid using a controller with SATA port multipliers, they are known to cause various issues.

Hi,

maybe the solution can be in this topic :

I have disabled lowcurrentspinup ... i will check if it is better.

 

thanks.

Your appdata share has files on disk6 so this will likely prevent spindown of disk6 and parity.

 

Nothing can move open files so you have to disable Docker in Settings.

12 hours ago, nunu22 said:

maybe the solution can be in this topic :

You are not using an LSI, but it won't hurt to try.

Thanks for your support !

 

@trurl i guess this because i have flushed the cache to HDD before upgrading the cache. Now all is in cache (spin down working well and keep down all the night). All possible writing activities are now directly in the cache (except with mover)

 

@JorgeB i will first try like that, but i have the possiblity to reduce the number of HDD (some on them won't be used ...), and then getting HDD directly connected to the motherboard (and this will be better for cooling). This will be in second step.

 

regards