From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: some general questions on RAID Date: Fri, 05 Jul 2013 09:13:09 +0800 Message-ID: <51D61DA5.9090507@fnarfbargle.com> References: <1372962602.8716.56.camel@heisenberg.scientia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1372962602.8716.56.camel@heisenberg.scientia.net> Sender: linux-raid-owner@vger.kernel.org To: Christoph Anton Mitterer Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 05/07/13 02:30, Christoph Anton Mitterer wrote: > Hi. > > Well for me personally these are follow up questions to my scenario > presented here: http://thread.gmane.org/gmane.linux.raid/43405 > > But I think these questions would be generally interesting an I'd like > to add them to the Debian FAQ for mdadm (and haven't found real good > answers in the archives/google). > > > 1) I plan to use dmcrypt and LUKS and had the following stacking in > mind: > physical devices -> MD -> dmcrypt -> LVM (with multiple LVs) -> > filesystems I have two arrays with dmcrypt on top of MD. Array 1 is 4 x Seagate 15k SAS drives in a RAID10 f2. Array 2 is 6 x 240G SSD's in a RAID10 n2. Array 2 is partitoned. All run ext4. The CPU is an AMD FX8350. I can max out all arrays with sequential or random r/w loads. So dmcrypt is not a limiting factor for me. When I say max out, I run into bandwidth limits on the hardware before dmcrypt gets in the way.