From owner-freebsd-fs@FreeBSD.ORG Sat Feb 22 03:26:46 2014 Return-Path: Delivered-To: fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 57EAAA41 for ; Sat, 22 Feb 2014 03:26:46 +0000 (UTC) Received: from vps1.elischer.org (vps1.elischer.org [204.109.63.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 2953A1123 for ; Sat, 22 Feb 2014 03:26:45 +0000 (UTC) Received: from jre-mbp.elischer.org (ppp121-45-232-70.lns20.per1.internode.on.net [121.45.232.70]) (authenticated bits=0) by vps1.elischer.org (8.14.7/8.14.7) with ESMTP id s1M3QYJD038915 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Fri, 21 Feb 2014 19:26:37 -0800 (PST) (envelope-from julian@freebsd.org) Message-ID: <530818E5.4090100@freebsd.org> Date: Sat, 22 Feb 2014 11:26:29 +0800 From: Julian Elischer User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: Erik Stian Tefre , Willem Jan Withagen , fs@freebsd.org Subject: Re: What types of SSDs to use..... References: <5305F8B0.1060308@digiware.nl> <53060AF4.9070900@tefre.com> In-Reply-To: <53060AF4.9070900@tefre.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 22 Feb 2014 03:26:46 -0000 On 2/20/14, 10:02 PM, Erik Stian Tefre wrote: >> Hi, >> >> I'm looking for advise and suggestions on what SSDs to use for the >> ZFS-systems I have and/or am building.... >> >> I know the difference between SLC en MLC , but beyond that I have not >> the best experience with all the older SSD I have lingering about >> here. >> >> Most of them just "disconnect" after a while. >> It could be because they have exceeded their wear level and just >> can not >> write any more. But than that has occurred rather fast. >> >> So what types SSD are others using for >> ZIL >> cache >> what is your experience with them >> > Intel SSDs are good. I've got some handfuls of x25-e, 320, DC S3500 > and DC S3700 running in supermicro servers and none of them have > ever failed or dropped out in any way. The x25-es have been hammered > with database loads 24/7 since 2009 without any issues. the newest intel drives have enough RAM inhtem to actually index the entire drive in ram, so the performance is a lot better. Prior to that they had to hold the index on flash, (with a cache). > > I use DC S3500 for cache. DC S3700 is probably better for ZIL. (The > 3700 has a higher write endurance HET-MLC, 10x the endurance of the > S3500 I think and 4x the write IOPS.) > > Here's an interesting SSD stress test report by the way: > http://www.extremetech.com/computing/173887-ssd-stress-testing-finds-intel-might-be-the-only-reliable-drive-manufacturer > doesn't count PCI SSDs.. > > -- > Erik > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >