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Date: Tue, 3 Oct 2017 17:28:57 +0200
From: Markus Wild <fbsd-lists@dudes.ch>
To: freebsd-scsi@freebsd.org
Subject: Re: ZFS prefers iSCSI disks over local ones ?
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> > Any way however to set rotationrate to 7200 (or to a slightly greater value (*)) as well for iSCSI drives ?
> > I looked through ctl.conf(5) and iscsi.conf(5) but did not found anything related.  
> 
> Sorry, (*) or to a slightly lower value (of course...).
> I forgot to mention that as the initiator, target is a FreeBSD 11.0 server.

We use this in our ctl.conf to ensure vmware doesn't consider the iscsi volumes to be ssd drives:

[...]
        lun 1 { path /dev/zvol/data/volumes/zvol1 ; option rpm 10000 }
[...]

Cheers,
Markus