How to speed up slow zpool scrub?

[DH]

Take a long look at the FreeNAS documentation and discussion threads - if you're not using a sufficient quantity of ECC ram with ZFS you're asking for anomalous behavior.  I'm not a ZFS expert, but the documentation leads me to think inadequate system ram is certainly a consideration.  

FreeNAS requires a minimum of 8 GB of ECC ram when used with ZFS.

David Hutchens III 
System Administrator

--------------------------------------------
On Tue, 4/26/16, Miroslav Lachman <000.fbsd at quip.cz> wrote:

 Subject: Re: How to speed up slow zpool scrub?
 To: "DH" <dhutch9999 at yahoo.com>, freebsd-fs at freebsd.org
 Date: Tuesday, April 26, 2016, 9:34 AM
 
 DH wrote on 04/26/2016
 17:47:
 >> 5GB of RAM
 >
 > That seems to be an
 insufficient amount of system ram when employing zfs.
 >
 > Take a look at
 this:
 >
 > http://doc.freenas.org/9.3/freenas_intro.html#ram
 
 I know 5GB is not much these
 days but is memory used for scrubbing a 
 lot? Because I am satisfied with working
 performance. The only concern 
 is slow
 scrubbing and I am not sure that more memory helps in this
 case.
 
 Miroslav Lachman