X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id 4B28111F6D2A for ; Fri, 14 Apr 2006 17:15:37 -0300 (ADT) X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Score: 0.119 X-Spam-Level: X-Spam-Status: No, score=0.119 required=5 tests=[AWL=0.118, UNPARSEABLE_RELAY=0.001] Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id BqhXb1cJpFdY for ; Fri, 14 Apr 2006 17:15:32 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey- Received: from exchange.g2switchworks.com (mail.g2switchworks.com [63.87.162.25]) by postgresql.org (Postfix) with ESMTP id 3D94F11F7330 for ; Fri, 14 Apr 2006 17:15:33 -0300 (ADT) Received: from 10.10.1.37 ([10.10.1.37]) by exchange.g2switchworks.com ([10.10.1.2]) with Microsoft Exchange Server HTTP-DAV ; Fri, 14 Apr 2006 20:15:33 +0000 Received: from state.g2switchworks.com by mail.g2switchworks.com; 14 Apr 2006 15:15:33 -0500 Subject: Re: Inserts optimization? From: Scott Marlowe To: Francisco Reyes Cc: Michael Stone , pgsql-performance@postgresql.org In-Reply-To: References: <443DA715.4060606@gmail.com> <9549.1144903344@sss.pgh.pa.us> <20060414055923.GX49405@pervasive.com> <20060414114911.GG32678@mathom.us> <20060414190620.GH32678@mathom.us> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1145045732.23538.86.camel@state.g2switchworks.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Fri, 14 Apr 2006 15:15:33 -0500 X-Archive-Number: 200604/345 X-Sequence-Number: 18429 On Fri, 2006-04-14 at 15:09, Francisco Reyes wrote: > Michael Stone writes: > > > I still don't follow that. Why would the RAID level matter? IOW, are you > > actually wanting 2 spares, or are you just stick with that because you > > need a factor of two disks for your mirrors? > > RAID 10 needs pairs.. so we can either have no spares or 2 spares. Spares are placed in service one at a time. You don't need 2 spares for RAID 10, trust me.