From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.saout.de ([127.0.0.1]) by localhost (mail.saout.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LbT_EFl00oOw for ; Fri, 23 Nov 2012 10:27:26 +0100 (CET) Received: from v4.tansi.org (ns.km33513-03.keymachine.de [87.118.94.3]) by mail.saout.de (Postfix) with ESMTP for ; Fri, 23 Nov 2012 10:27:26 +0100 (CET) Received: from gatewagner.dyndns.org (84-74-164-49.dclient.hispeed.ch [84.74.164.49]) by v4.tansi.org (Postfix) with ESMTPA id 3315D206733 for ; Fri, 23 Nov 2012 10:27:26 +0100 (CET) Date: Fri, 23 Nov 2012 10:27:42 +0100 From: Arno Wagner Message-ID: <20121123092740.GA15419@tansi.org> References: <50AEF7B3.4000807@babioch.de> <20121123060720.GA5520@tansi.org> <50AF3B3F.9000508@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <50AF3B3F.9000508@gmail.com> Subject: Re: [dm-crypt] Reconsidering default options for cryptsetup-reencrypt List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dm-crypt@saout.de On Fri, Nov 23, 2012 at 10:00:47AM +0100, Milan Broz wrote: > On 11/23/2012 07:07 AM, Arno Wagner wrote: > > > I think you do. I also think that HW raid is a bit exotic on Linux > > these days, as SW RAID gives better features and often better > > performance. > > If you work in enterprise environment, this is definitely not true :) It depends. I have used a 12-way SAS RAID controller as dumb controller with software-RAID and have gotten better results. But that was one with Linux support that sucked. With good Linux support, that may be entirely different. On the exotic, I agree that in enterprise environments HW controllers are the norm, but I think by now that is mainly because they are simpler to use. > And for some strange reasons, cloud environments are more > and more popular where "elastic" storage means usually some > virtualized HW storage array. Ah, yes. The "cloud" stuff, where all your data turns into hot vapor. I really do not get why people think using even more complex environments that they do not even fully control is a good idea when we obviously have not even mastered simpler systems... > Also there are SSD drives which uses internally RAID0 to speed > up operations (in reality it is more independent SSD drives inside). Ok, but I think _that_ does not count, unless you know of some that expose the controller. ;-) Arno -- Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@wagner.name GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718 ---- One of the painful things about our time is that those who feel certainty are stupid, and those with any imagination and understanding are filled with doubt and indecision. -- Bertrand Russell