md_write_method when set to Auto or Reconstruct Write causes instability

[amateur_wizard]

md_write_method when set to Auto or Reconstruct Write causes instability. 

 

To be sure of this I set the system to the classic read/modify/write and allowed the uptime to continue to 40 days. I then set it to auto and within two days the system was inaccessible and required a restart.

[Squid]

Can your power supply handle all the drives spinning up?

[amateur_wizard]

Yes, I checked that the rail that powers the drives has enough and it's well within margin.

 

750W PSU with 12 drives.

Edited June 12, 2021 by amateur_wizard
Additional Information

[amateur_wizard]

EVGA - Products - EVGA 750 GQ, 80+ GOLD 750W, Semi Modular, EVGA ECO Mode, 5 Year Warranty, Power Supply 210-GQ-0750-V1 - 210-GQ-0750-V1

 

This is it. The rail info they show is at the bottom.

[JorgeB]

You can enable syslog mirror to flash than post that after a crash, might be something visible there.

[John_M]

On 6/12/2021 at 2:19 PM, amateur_wizard said:

I then set it to auto

 

The Auto option is the default and is the same as read/modify/write, so there should be no difference in vanilla Unraid. Are you using the Auto Turbo-Write plugin, which modifies the Auto option?

 

16 hours ago, amateur_wizard said:

The rail info they show is at the bottom.

 

I checked the specs. It has a single +12 volt rail, which is good, but can your power distribution cope with 12 drives? Are you using splitters?

 

[amateur_wizard]

I did it twice and got the same result. I am not using the turbo-write plugin. I'll try enabling syslog mirror to flash and see what happens.

 

Edited June 18, 2021 by amateur_wizard
Additional Information