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To: freebsd-fs@freebsd.org
Subject: Re: RFC: Suggesting ZFS "best practices" in FreeBSD
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Date: Tue, 22 Jan 2013 10:54:28 -0600
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From: Mark Felder <feld@feld.me>
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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.