From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Soltys Subject: Re: Help: very slow software RAID 5. Date: Thu, 27 Sep 2007 11:51:38 +0200 Message-ID: <46FB7D2A.1050608@ziu.info> References: <20070918230914.9FF5910215F@medulla.enet.sharplabs.com> <20070919014919.DF19D10215F@medulla.enet.sharplabs.com> <20070919174956.9497310209D@medulla.enet.sharplabs.com> <46F292E2.1090700@tmr.com> <20070920184738.441FD10208C@medulla.enet.sharplabs.com> <46F2E159.9030806@msgid.tls.msk.ru> <20070921005851.44E8910236D@medulla.enet.sharplabs.com> <87r6knay66.fsf@informatik.uni-tuebingen.de> <20070925181618.82F47102162@medulla.enet.sharplabs.com> <87sl521kqh.fsf@informatik.uni-tuebingen.de> <20070925235016.02F6E1023B9@medulla.enet.sharplabs.com> <87k5qe19p0.fsf@informatik.uni-tuebingen.de> <20070927062317.3CCAB1023E0@medulla.enet.sharplabs.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20070927062317.3CCAB1023E0@medulla.enet.sharplabs.com> Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org Cc: "Dean S. Messing" List-Id: linux-raid.ids Dean S. Messing wrote: > > I don't see how one would do incrementals. My backup system uses > currently does a monthly full backup, a weekly level 3 (which > saves everything that has changed since the last level 3 a week ago) and > daily level 5's (which save everything that changed today). > Rsync is fantastic tool for incremental backups. Everything that didn't change can be hardlinked to previous entry. And time of performing the backup is pretty much neglible. Essentially - you have equivalent of full backups at almost minimal time and space cost possible.