Date: Fri, 14 Nov 2008 06:46:28 +1000 From: Danny Carroll <fbsd@dannysplace.net> To: Nikolay Denev <ndenev@gmail.com> Cc: freebsd-fs@freebsd.org, Jeremy Chadwick <koitsu@FreeBSD.org>, Dieter <freebsd@sopwith.solgatos.com>, freebsd-hardware@freebsd.org Subject: Re: Areca vs. ZFS performance testing. Message-ID: <491C9224.4050407@dannysplace.net> In-Reply-To: <04B6F041-3052-4650-BE62-817E2B28D034@gmail.com> References: <491BBF38.9010908@dannysplace.net> <200811130657.GAA26763@sopwith.solgatos.com> <20081113074301.GA13938@icarus.home.lan> <491C32BF.7020805@dannysplace.net> <04B6F041-3052-4650-BE62-817E2B28D034@gmail.com>
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Nikolay Denev wrote: > I think some RAID controllers do not use the cache when you export the > disks as pass-thru/jbod, I assumed this is the case but now I am not so sure. > but on some controllers you can workaround this by making > every disk a RAID0(stripe) array with only one disk. > Dunno if that would work on the areca... You can probably do that with this as controller as well. However if I look at the manual I do not see an option to disable the cache for Raid sets. Only to change it from Write-back to Write-Through. I guess write-through is *almost* as if the cache is disabled. -D
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