From mboxrd@z Thu Jan 1 00:00:00 1970 From: Molle Bestefich Subject: Re: strangre drive behaviour. Date: Mon, 7 Mar 2005 22:21:22 +0100 Message-ID: <62b0912f050307132144db2b6b@mail.gmail.com> References: <422AAAA7.6080106@fastmail.co.uk> Reply-To: Molle Bestefich Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit In-Reply-To: <422AAAA7.6080106@fastmail.co.uk> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Max Waterman wrote: > Can I just make it a slave device? How will that effect performance? AFAIR (CMIIW): - The standards does not allow a slave without a master. - The master has a role to play in that it does coordination of some sort (commands perhaps?) between the slave drive and the controller. But on the other hand, I've seen ATAPI cdrom drives working in "slave only" configurations for years. Hm. It shouldn't cause performance degradation, but it's a kinky setup which you should probably trust a bit less than a master-only setup. If it's not the CABLE SELECT thing, it could be that the firmware on the drive acting up is different from f/w on the other drives. Check versions?