From owner-freebsd-current@FreeBSD.ORG Sun Dec 16 01:30:54 2007 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7502416A41A; Sun, 16 Dec 2007 01:30:54 +0000 (UTC) (envelope-from sobomax@FreeBSD.org) Received: from sippysoft.com (gk.360sip.com [72.236.70.226]) by mx1.freebsd.org (Postfix) with ESMTP id 3E8F313C4D1; Sun, 16 Dec 2007 01:30:53 +0000 (UTC) (envelope-from sobomax@FreeBSD.org) Received: from [192.168.0.3] ([204.244.149.125]) (authenticated bits=0) by sippysoft.com (8.13.8/8.13.8) with ESMTP id lBG1UpOm097055 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 15 Dec 2007 17:30:52 -0800 (PST) (envelope-from sobomax@FreeBSD.org) Message-ID: <47647FBC.6060401@FreeBSD.org> Date: Sat, 15 Dec 2007 17:30:36 -0800 From: Maxim Sobolev Organization: Sippy Software, Inc. User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: Ivan Voras References: <47606C09.2070209@isc.org> <47609F0A.7010805@clearchain.com> <47609FE3.8040606@barafranca.com> <4760B444.1080604@clearchain.com> <06CAC7FC-DB58-441D-A6E0-76D1D8133393@tamu.edu> <86ir31xwlu.fsf@ds4.des.no> <476343B4.8080208@FreeBSD.org> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-current@FreeBSD.org Subject: Re: ZFS melting under postgres... X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Dec 2007 01:30:54 -0000 Ivan Voras wrote: > Maxim Sobolev wrote: > >> That's no longer true. You can't get more than 5-10MB/s from >> seek-intensive RAID0 with two 15K drives, while 20-30MB/s is not a >> problem for the comparable priced/sized SSD drive. > > Can you point me at a vendor with SSDs of such characteristics? You can get 64GB SSD now below US$1K, which is comparable price-wise to RAID0 with two 70GB 15K SAS drives. For example: http://accessories.us.dell.com/sna/productdetail.aspx?sku=341-5582&cs=04&c=us&l=en&dgc=SS&cid=25747&lid=585572 -Maxim