Konfiguration for WD RED EFRX

[apollo567]

Hello,

just build in 4 brandnew WD40EFRX WD RED.
I am currently not really sure if I should be happy with the performance.
But to be sure, these Disks have to be formated with advanced format konfiguration (4K-Sektor size) , isn't it ?

Regards
apollo

[b0ssman]

yes any disk of the last 3-4 years has this stupid advanced format not telling the operating system it is a 4k sector drive.

[apollo567]

ok, then thats not a reason for worser performance than expected. Will try around somewhat

[kenZ71]

I just recently rebuilt my ZFS Pool to take advantage of the 4K Sectors.

I followed the steps outline in the below link starting at section 3 ZFS

http://ivoras.sharanet.org/blog/tree/20 ... rives.html

[apollo567]

Now found the reason for the Performance Problem:
many smaller Files => up to 65 MB/s
few large Files => up to 110 Mb/s

[crowi]

Make also sure to have the correct number of disks for your RAIDZx pool:
RAIDZ1 vdevs should have 3, 5, or 9 devices in each vdev
RAIDZ2 vdevs should have 4, 6, or 10 devices in each vdev
RAIDZ3 vdevs should have 5, 7, or 11 devices in each vdev
https://pthree.org/2012/12/13/zfs-admin ... d-caveats/
and
http://www.solarisinternals.com/wiki/in ... ices_Guide

[apollo567]

Make also sure to have the correct number of disks for your RAIDZx pool:
RAIDZ1 vdevs should have 3, 5, or 9 devices in each vdev
RAIDZ2 vdevs should have 4, 6, or 10 devices in each vdev
RAIDZ3 vdevs should have 5, 7, or 11 devices in each vdev
https://pthree.org/2012/12/13/zfs-admin ... d-caveats/
and
http://www.solarisinternals.com/wiki/in ... ices_Guide

With regard to the discussions about this topic I found something from raul quite good guiding :

http://blog.delphix.com/matt/2014/06/06 ... ipe-width/