Parity check much slower than with new motherboard

[Blade]

I was running a supermicro X8SIL-F and the parity check was very quick (just under a hundred MB per sec)

Parity check took 13 1/2 hours on the X8SIL-F

 

I upgraded my motherboard to a supermicro X8DTH-6F and now the parity check is about 28MB/sec

This one says it was going to take over 2 days

 

I have 15 hard drives and 2 SSD cache drives

 

Is there something I could tweak to speed up the parity check?

I am attaching a diagnostic

 

tower2-diagnostics-20180901-1012.zip

[JorgeB]

Didn't you notice the errors on the failing disk3?

 

197 Current_Pending_Sector  -O--CK   195   195   000    -    1356

Notifications disabled?

[JorgeB]

BTW, you should immediately cancel the parity check, since disk errors on a correcting check can corrupt parity, scheduled checks should always be non correct.

[Blade]

I have cancelled parity check 

it looks like I need to replace disk3 then?

[Blade]

Would disk3 having read errors cause the parity check to take almost 3 days to run?

 

[Squid]

Every read error means that the system has to recalculate the information that is supposed to be in that sector from all of the other drives, and re-write the offending sector.  So, yes

[Blade]

Thanks Squid

I will replace the drive immediately then - I have a spare here

 

[JorgeB]

And make sure you enable system notifications, you would get warnings of the pending sectors and the read errors.

[Vr2Io]

13 hours ago, Squid said:

Every read error means that the system has to recalculate the information that is supposed to be in that sector from all of the other drives, and re-write the offending sector.  So, yes

I also think it should be , but recent disk read error event show negative.

So, if it is true, then tick correction or not during parity check also need consider.