From owner-freebsd-questions@FreeBSD.ORG Tue Feb 15 10:20:34 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7F86110656C0 for ; Tue, 15 Feb 2011 10:20:34 +0000 (UTC) (envelope-from kraduk@gmail.com) Received: from mail-ww0-f42.google.com (mail-ww0-f42.google.com [74.125.82.42]) by mx1.freebsd.org (Postfix) with ESMTP id 0F1758FC16 for ; Tue, 15 Feb 2011 10:20:33 +0000 (UTC) Received: by wwi17 with SMTP id 17so2895652wwi.1 for ; Tue, 15 Feb 2011 02:20:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type:content-transfer-encoding; bh=fmdH6EZbADa86eGjiUfX13563FoJHiKNCRKvTackq5I=; b=tQEio4FnNAKGIRGfV5OMz2RleL62kA5U56U/2vFXNFl8Kx0v68Ur4xQMTs361ZSKk2 NSvFHSEs+YRJ6PJf4PVGJjuoxh8VZGpip4JkOPEoYc9Ez5S1mpjCtxft9XficMgs/GdD gBn3xHaFPEntndcpRQd5aKHoNTlfr/CzluYOw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=ODAPKCEW0Z7+e9hjHT7MORgNxV/homl3Mtb5qrYOigzDoHsv/8GgnhkR1BtNLPk5CR CQ6xfyAt2o3/cqRRUAFraXUnYUy7UP2Kisnb6v9NaK/7513sQaa4Fx/1Dt7h0KX1e8ss YEi7z/Rplx9wyVhae4ukTzBI2LGG1lHdNsopE= MIME-Version: 1.0 Received: by 10.216.56.65 with SMTP id l43mr512333wec.113.1297765232893; Tue, 15 Feb 2011 02:20:32 -0800 (PST) Received: by 10.216.80.147 with HTTP; Tue, 15 Feb 2011 02:20:32 -0800 (PST) In-Reply-To: <20110214235507.GA66554@guilt.hydra> References: <20110213092353.GA58281@guilt.hydra> <20110213073801.65518b9c@scorpio> <20110213131051.00001ebf@unknown> <20110213085805.72f0132d@scorpio> <20110213164748.GB60459@guilt.hydra> <20110213181223.GD55168@orange.esperance-linux.co.uk> <7583C9E5-EA30-4C75-BDF7-C1BA123B8334@mac.com> <20110214235507.GA66554@guilt.hydra> Date: Tue, 15 Feb 2011 10:20:32 +0000 Message-ID: From: krad To: FreeBSD Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: FreeBSD and SSD drives X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Feb 2011 10:20:34 -0000 On 14 February 2011 23:55, Chad Perrin wrote: > On Mon, Feb 14, 2011 at 03:32:30PM -0800, Chuck Swiger wrote: >> >> >From what I understand (a quick review of wikipedia helps :), modern >> >flash cards are now typically rated for 100K writes, include ECC bits >> >to actually correct or at least detect errors and try to remap bad >> >blocks to unused blocks, and implement wear-leveling techniques of >> >varying degrees of effectiveness. >> >> Regards, >> -- >> -Chuck >> >> PS: Reposted from a NetBSD thread, was >> .... > > Just make sure you double-check the rating for the specific SSD storage > hardware you're actually using. =A0The fact the state of the art is bette= r > now than it was does not mean you are using state of the art hardware. > > -- > Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ] > We have the main DB server on our portal running directly on some of these http://www.oracle.com/us/043970.pdf. Its a high volume site so we really needed the speed. They are supposed to last 6 years but we shall see. We have the 1 TB version, all mirrored giving us 500 GB. We run solaris 10 on top with zfs, so we should see any data corruption very quickly if it starts to happen. The cluster has been running for about a year now