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Date:      Tue, 22 Jan 2013 10:54:28 -0600
From:      Mark Felder <feld@feld.me>
To:        freebsd-fs@freebsd.org
Subject:   Re: RFC: Suggesting ZFS "best practices" in FreeBSD
Message-ID:  <op.wrbnw2nt34t2sn@markf.office.supranet.net>
In-Reply-To: <A196DCF7-B5C0-4EAB-960F-795D99A4B7F5@dragondata.com>
References:  <314B600D-E8E6-4300-B60F-33D5FA5A39CF@sarenet.es> <alpine.BSF.2.00.1301220804530.61512@wonkity.com> <A196DCF7-B5C0-4EAB-960F-795D99A4B7F5@dragondata.com>

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On Tue, 22 Jan 2013 09:40:24 -0600, Kevin Day <toasty@dragondata.com>  
wrote:

> I've looked at using an SSD for meta-data only caching, but it appears  
> that we've got far more than 256GB of metadata here that's being  
> accessed regularly (nearly every file is being stat'ed when rsync runs)  
> so I'm guessing it's not going to be incredibly effective unless I buy a  
> seriously large SSD.

Well, 512GB SSDs are less than $500 now (Samsung 830) but can't you just  
add multiple SSDs? AFAIK you can have multiple L2ARC devices and ZFS will  
just split the load between them.



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