From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alberto Alonso Subject: Re: Software RAID when it works and when it doesn't Date: Sun, 14 Oct 2007 13:22:17 -0500 Message-ID: <1192386137.16416.313.camel@w100> References: <1192300851.16416.265.camel@w100> <471241F8.50205@harddata.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <471241F8.50205@harddata.com> Sender: linux-raid-owner@vger.kernel.org To: Maurice Hilarius Cc: vger majordomo for lists List-Id: linux-raid.ids On Sun, 2007-10-14 at 10:21 -0600, Maurice Hilarius wrote: > Alberto Alonso wrote: > > > PATA (IDE) with > Master and Slave drives is a "bad idea" as, when one drive fails, the > other of the Master & Slave pair often is no longer usable. > On discrete interfaces, with all drives configured as Master (single) > it is more tolerant. Before SATA became the de-facto we used promise PCI boards on top of the built in channels. As you mentioned, a single drive per channel is a must. We only had small servers with up to 6 PATA drives. This was proved to be really reliable and handled all disk failures without bringing the servers down. What I am trying to determine in these posts is a combination of hardware and software that will make software RAID a reliable solution when disks fail. > -- > With our best regards, > > Maurice W. Hilarius Telephone: 01-780-456-9771 > Hard Data Ltd. FAX: 01-780-456-9772 > 11060 - 166 Avenue email:maurice@harddata.com > Edmonton, AB, Canada http://www.harddata.com/ > T5X 1Y3 > Thanks, Alberto