Date: Wed, 23 Jan 2013 16:16:45 +0100 From: Jean-Yves Moulin <jym@baaz.fr> To: Scott Long <scottl@samsco.org> Cc: FreeBSD Filesystems <freebsd-fs@freebsd.org> Subject: Re: RFC: Suggesting ZFS "best practices" in FreeBSD Message-ID: <81460DE8-89B4-41E8-9D93-81B8CC27AA87@baaz.fr> In-Reply-To: <565CB55B-9A75-47F4-A88B-18FA8556E6A2@samsco.org> References: <314B600D-E8E6-4300-B60F-33D5FA5A39CF@sarenet.es> <565CB55B-9A75-47F4-A88B-18FA8556E6A2@samsco.org>
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Hi, On 22 Jan 2013, at 15:33 , Scott Long <scottl@samsco.org> wrote: > Agree 200%. Despite the best effort of sales and marketing people, = RAID cards do not make good HBAs. At best they add latency. At worst, = they add a lot of latency and extra failure modes. But what about battery-backed cache RAID card ? They offer a = non-volatile cache that improves writes. And this cache is safe because = of the battery. These feature doesn't exist on bare disks. best, jym=
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