Parity-Sync/Data-Rebuild speed ?

[Kaltar]

I've just added my parity drive to my array, but I think it is lacking ALOT in speed.

I'm seeing reads and writes speed about 37-40 mb/s.

Is this normal speed or do I have a serious speed problem ?

[JorgeB]

Tools -> Diagnostics

[Kaltar]

As you Command Johnnie

 

I've also just noticed the 38 errors on disk 1.

It doesn't seem to rise though.

tower-diagnostics-20170517-2216.zip

[JorgeB]

Disk1 has issues:

 

Device Model:     WDC WD40EFRX-68WT0N0
Serial Number:    WD-WCC4E4JHAA64

197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       1

Parity won't be 100% correct due to those reading errors.

 

There are also constant USB disconnects logged:
 

...
May 17 21:50:10 Tower kernel: usb 2-1.3: USB disconnect, device number 73
May 17 21:50:10 Tower kernel: usb 2-1.3: new high-speed USB device number 74 using ehci-pci
May 17 21:50:10 Tower kernel: hub 2-1.3:1.0: USB hub found
May 17 21:50:10 Tower kernel: hub 2-1.3:1.0: 2 ports detected
May 17 21:51:15 Tower kernel: usb 2-1.3: USB disconnect, device number 74
May 17 21:51:16 Tower kernel: usb 2-1.3: new high-speed USB device number 75 using ehci-pci
May 17 21:51:16 Tower kernel: hub 2-1.3:1.0: USB hub found
May 17 21:51:16 Tower kernel: hub 2-1.3:1.0: 2 ports detected
...

 

As for the low speed, I know HP Microservers have a write cache setting in the bios (disable by default) that's gives similar write speed, speeds become normal when it's enable.

[Kaltar]

Hmm don't remeber having turned off write cache. but will check.

 

As for the USB, nobody seems to be able to find out what those error are.

I have only one drive in the server, that is the Unraid USB key.

It has been the same error no matter what key I used, I have tried different keys, 4-5 keys, usb 2 and 3's

[JorgeB]

10 minutes ago, Kaltar said:

Hmm don't remeber having turned off write cache. but will check.

 

Default is off, at least on the Microservers.

 

11 minutes ago, Kaltar said:

As for the USB, nobody seems to be able to find out what those error are.

 

Look for a bios update but probably not serious (except for filling your syslog), you main problem ATM is disk1.

[Kaltar]

Yeah i'm using the newest bios on my proliant ML310e g8 server, så that can't help sadly.

 

As for the Write Cache, you are a GOD sent Johnnie, didn't know I had messed with it, but apparently I had, because now i'm seeing read and write speeds in the range of about 155-160mb/s on my WD Reds.

 

As for the Disk 1 I think it is still under warrenty, so I'll just have to move all data away from it and fill out the RMA.