Date: Thu, 15 Nov 2012 02:57:59 +0100 From: Mikael Fridh <frimik@gmail.com> To: freebsd-fs@freebsd.org Subject: Re: RHEL to FreeBSD file server Message-ID: <CALoBCadEPmpdP-g3UNtjNyPEfzMbzo2hVWC_uhLQe6=XA3=qmw@mail.gmail.com> In-Reply-To: <20121115001840.GA27399@FreeBSD.org> References: <50A130B7.4080604@cse.yorku.ca> <20121113043409.GA70601@neutralgood.org> <alpine.GSO.2.01.1211131132110.14586@freddy.simplesystems.org> <50A2B95D.4000400@cse.yorku.ca> <50A2F804.3010009@freebsd.org> <20121115001840.GA27399@FreeBSD.org>
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On Thu, Nov 15, 2012 at 1:18 AM, John <jwd@freebsd.org> wrote: > ----- Julian Elischer's Original Message ----- > > On 11/13/12 1:19 PM, Jason Keltz wrote: > > >On 11/13/2012 12:41 PM, Bob Friesenhahn wrote: > > >>On Mon, 12 Nov 2012, kpneal@pobox.com wrote: > > >>> > > >>>With your setup of 11 mirrors you have a good mixture of read > > >>>and write > > >>>performance, but you've compromised on the safety. The reason > > >>>that RAID 6 > > ... > > > >By the way - on another note - what do you or other list members > > >think of the new Intel SSD DC S3700 as ZIL? Sounds very promising > > >when it's finally available. I spent a lot of time researching > > >ZILs today, and one thing I can say is that I have a major > > >headache now because of it!! > > > > ZIL is best served by battery backed up ram or something.. it's tiny > > and not a really good fit an SSD (maybe just a partition) L2ARC on > > the other hand is a really good use for SSD. > > Well, since you brought the subject up :-) > > Do you have any recommendations for an NVRAM unit usable with Freebsd? > I've always had my eyes on something like this for ZIL but never had the need to explore it yet: http://www.ddrdrive.com/ Most recommendations I've seen have also been around mirrored 15krpm disks of some sort or even a cheaper battery-backed raid controller in front of decent disks. for zil it would just need a tiny bit of RAM anyway.
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