From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wols Lists Subject: Re: stripe_cache_size, some info Date: Mon, 20 Mar 2017 16:22:23 +0000 Message-ID: <58D001BF.1030804@youngman.org.uk> References: <58CFFC47.3000306@youngman.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Gandalf Corvotempesta Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 20/03/17 16:13, Gandalf Corvotempesta wrote: > 2017-03-20 16:59 GMT+01:00 Wols Lists : >> Burst speed, or sustained speed? Big difference ... > > Both :) > >> And I would avoid that entirely if I can - put the new disk in, do a >> --replace, and then remove the old one. Doing a hotswap like that will >> increase the stress on the array, and increased stress means another >> disk is more likely to fail. > > On newer server, i'll tend to avoid using all slots because of this. > With at least 1 slot available, cool things could be done, like > replace disks without compromize redundancy and so on. > > But on older server, i don't have enough slot available and the only > way to replace a disk is.... directly replace a disk :) > Get a cheap PCI(e) SATA card! You should be able to get something for around GBP20, and if it's only temporary who cares if drives and cables are left all over the place so long as the data is safe while you're updating. :-) Cheers, Wol