From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: It is safe to stop Raid being reshaped Date: Fri, 30 Dec 2011 14:19:15 +0800 Message-ID: <4EFD57E3.7060905@fnarfbargle.com> References: <4EFB67CC.7010500@shiftmail.org> <4EFBCA47.9010401@shiftmail.org> <4EFCF93F.6000607@fnarfbargle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Mikael Abrahamsson Cc: Jeremy Thompson , Asdo , linux-raid List-Id: linux-raid.ids On 30/12/11 12:31, Mikael Abrahamsson wrote: > On Thu, 29 Dec 2011, Jeremy Thompson wrote: > >> I thought about this as well - I have an Enermax 450 in there right now... I'll have to look for >> a higher watt power supply next I guess. > > Also look at how your feeds are balanced. Some PSUs have two rails, putting all drives on a single > rail causes your load handling capacity to go down significantly. I recommend getting a single > rail PSU as well, well above the capacity you think you need. > I made the move to a beefy single rail supply a few years ago. Wished I'd done it sooner. I'm using two of these : http://www.pcpower.com/power-supply/silencer-610-eps12v.html Both machines have 6 core Phenoms with 16GB of ram. Machine A has 15 7200RPM drives Machine B has 10 7200RPM and 4 15000RPM Drives The power supplies are well within limits, run cool and I've not had an issue since I upgraded to them a couple of years ago. I do staggered spin-ups on machine B, but Machine A fires all drives at boot. They've been running in this configuration for about 4 years on these PSU's. Regards, Brad