Received: from magus.postgresql.org (magus.postgresql.org [87.238.57.229]) by mail.postgresql.org (Postfix) with ESMTP id 13B4A29F0D5 for ; Mon, 12 Mar 2012 13:10:46 -0300 (ADT) Received: from elizabeth.gransy.com ([89.187.132.199]) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1S77pa-0006Mi-FC for pgsql-performance@postgresql.org; Mon, 12 Mar 2012 16:10:44 +0000 Received: from sq.gransy.com (localhost [127.0.0.1]) by elizabeth.gransy.com (Postfix) with ESMTP id 471D715E41BD; Mon, 12 Mar 2012 17:10:28 +0100 (CET) Received: from 62.40.76.70 (proxying for unknown) (SquirrelMail authenticated user tv@fuzzy.cz) by sq.gransy.com with HTTP; Mon, 12 Mar 2012 17:10:28 +0100 Message-ID: <22772df4044d97026a937e1425e6303f.squirrel@sq.gransy.com> In-Reply-To: References: Date: Mon, 12 Mar 2012 17:10:28 +0100 Subject: Re: Advice on Controller card for SAS disks From: "Tomas Vondra" To: "See Sing Lau" Cc: "'pgsql-performance@postgresql.org'" , "See Sing Lau" User-Agent: SquirrelMail/1.4.21 MIME-Version: 1.0 Content-Type: text/plain;charset=utf-8 X-Priority: 3 (Normal) Importance: Normal Content-Transfer-Encoding: quoted-printable X-Pg-Spam-Score: -0.0 (/) X-Archive-Number: 201203/96 X-Sequence-Number: 46546 On 7 B=C5=99ezen 2012, 18:49, See Sing Lau wrote: > > We are looking for advice on the RAID controller cards with battery bac= k > cache for 10K SAS disks with RAID 10. Any suggestion for the best card > and settings to use for heavy write transactions. It's hard to give you advices when we know nothing about your environment (e.g. what OS) and other requirements (how many drives, what does 'heavy write transactions' means etc.). I'd personally vote for LSI/3Ware, Areca or HighPoint controllers. Tomas