array health report fail,,

[ArveVM]

Hi
relatively fresh unRaid user - so be gentle with me:)

have used for vm/docker mgmt for a short year,, just starting to add drives to my array and experiencing failures.

 

Did some forum-browsing the last time it happened, and concluded it might have been loose cabling because it was short time after adding parity and second drive to array.
Rebuild to same disk according to user-guide, and it has been working fine for about two weeks- then the same issue occurs (but this time on the new disk)

 

Background:
Have an Dell OptiPlex 9020 Small Form Factor with disks in external enclosure,, and wondering if it might be power-issues or cabling? The drives that have reported failure are new WD red's  (the others are old crap)-drives

Setup:

using original PSU; 255 W according to https://www.dell.com/support/manuals/no-no/optiplex-9020-desktop/opt9020sffom-v2/specifications?guid=guid-0805b167-15c7-4302-a0b4-aabdc5e358a3&lang=en-us
Have an LSI 9211-8i 6G SAS HBA with 4 3,5'' disks attached (parity, two array-disks and one unassigned for frigate)
in addition a usb-attached unassigned (for local disaster recovery)
and two SSD's attached to motherboard

 

unraid1-diagnostics-20230505-0904.zip

 

[ArveVM]

more info on current power-consumption:
Using NUT's, and it is reporting UPS power usage of around 100watt

- but the UPS also power a Unify DreamMachine Pro + poe-inject/8lite (poe for 2 cameras and 2ap's and a flex-swithc) and the usual ISP equipment,,
so the 255W 'capacity' seems theoretically good for me,, but am I missing some issues on peaks or something - or will the diagnostics show other issue ??

[JorgeB]

Recommend disabling spin down for a couple of days and retest, lots of disk/controller issues logged and they appear to coincide with spin down/up events.

[ArveVM]

On 5/5/2023 at 10:32 AM, JorgeB said:

Recommend disabling spin down for a couple of days and retest, lots of disk/controller issues logged and they appear to coincide with spin down/up events.

thanks,  did disable spindown and have been stable since:)

Did also check with some psu-calculation tools,, and it seems I've been streching the capcaity of the PSU to the limit

(ups still reporting usage of around 100watt, while calc-tools show 230w to 380w (different tools)
- so I guess that is the root-cause

- and your solution is a good workarond

So next step is to get new case/psu to be able to add rest of my drives,,  

Can I please ask how/where you find the info on disk/controller-issues when spinup/spindown?

 - or guidance to some doc's/tutorials on reading the actual diagnostics  (I'm a noob,, but like to get to know the basics,,so apriciate any pointers to increas knowledge,,)

[JorgeB]

1 hour ago, ArveVM said:

Can I please ask how/where you find the info on disk/controller-issues when spinup/spindown?

It can happen with some disk/controller combos, you could try a swapping to a different controller and re-enabling spin down, also see if it only happens with a specific disk model.

[ArveVM]

3 hours ago, JorgeB said:

It can happen with some disk/controller combos, you could try a swapping to a different controller and re-enabling spin down, also see if it only happens with a specific disk model.

It's a LSI 9211-8i / WD RED / WD RED PLUS combo

unfortunately the drives are outside the SFF, and only cables from the LSI 9211-8i is long enough,,, so guess swithcing from one port to the other on the LSI would not really be a test?  (also mobo is low on sata-connections and had to use them for the two cashe-SSD-disks (which did not like the LSI)

I don't think I will invest more time on this,, as clearly the psu is lower capacity than recommended - it is not a solution for the future - so will leave the disks spinning until I get a more suitable PSU (and even more disks )  

many thanks for the assistance

[JorgeB]

25 minutes ago, ArveVM said:

It's a LSI 9211-8i / WD RED / WD RED PLUS combo

Don't remember issues with low capacity models, high capacity maybe, one possibly solution would be to replace the SAS2 LSI with a SAS3 model, like the 9300-8i.