Something keeps waking my drives..?

[Norlig]

Hi,

I've got 8x Drives in a RAIDz2 array.

my NAS boot of an SSD, and I've set the System dataset to the boot-pool.
Doing that fixed alot of my issues with the disks not spinning down.

However, a couple times a day I can hear that my drives beep just before they spin down, meaning something caused them to spin up.

I got some small tops of ~20KB writes, that I have no idea what is causing.
(The big one is mail server backup writing at 23:30)

I have no Jails or VM's.

All of them show the exact same small write cycle.
Anyone know what I can check?

 

[Chris Moore]

Why are you trying to keep your drives stopped? Starting and stopping the drives causes excess wear on the motor which will lead to premature failure of the drive.

 

[Norlig]

Why are you trying to keep your drives stopped? Starting and stopping the drives causes excess wear on the motor which will lead to premature failure of the drive.

Because I write to them more or less once a day, maybe read from them 3-5 times a week.

I'd prefer them to be spun down when not in use, to use less power and make less vibrations/noise.

 

[VioletDragon]

Hi,

I've got 8x Drives in a RAIDz2 array.

my NAS boot of an SSD, and I've set the System dataset to the boot-pool.
Doing that fixed alot of my issues with the disks not spinning down.

However, a couple times a day I can hear that my drives beep just before they spin down, meaning something caused them to spin up.

I got some small tops of ~20KB writes, that I have no idea what is causing.
(The big one is mail server backup writing at 23:30)

I have no Jails or VM's.

All of them show the exact same small write cycle.
Anyone know what I can check?

Spinning disks like to be left spinning for 24/7 not spinning down and spinning up this will kill the drives a lot sooner. Vibration will also kill disks if you are having issues with vibration buy yourself a proper Hotswap Server Chassis.

 

[sretalla]

Just a theory, but what's your snapshot schedule for that pool?

 

[Norlig]

Just a theory, but what's your snapshot schedule for that pool?

Dont have one

 

[sretalla]

Dont have one

CRON jobs or SMART tests?

 

[Norlig]

CRON jobs or SMART tests?

No Cron Jobs.

Smart Tests:

Scrub Task:

So nothing running that would cause a small write all days at a set hourly interval.

Just added the mapped driveletter on my HTPC towards my NAS, as an excluded folder in Windows protection, to see if its background scanning