From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Chmielewski Subject: ceph, slow (cheap) and fast (expensive) storage? Date: Tue, 08 Jun 2010 12:30:04 +0200 Message-ID: <4C0E1BAC.8070306@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.virtall.com ([178.63.195.102]:54357 "EHLO mail.virtall.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751565Ab0FHKhA (ORCPT ); Tue, 8 Jun 2010 06:37:00 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.virtall.com (Postfix) with ESMTP id 0E445352DCC for ; Tue, 8 Jun 2010 12:30:09 +0200 (CEST) Received: from mail.virtall.com ([127.0.0.1]) by localhost (web1.virtall.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wW9i36PgM1Us for ; Tue, 8 Jun 2010 12:30:06 +0200 (CEST) Received: from [192.168.10.145] (e183095092.adsl.alicedsl.de [85.183.95.92]) by mail.virtall.com (Postfix) with ESMTPSA for ; Tue, 8 Jun 2010 12:30:06 +0200 (CEST) Sender: ceph-devel-owner@vger.kernel.org List-ID: To: ceph-devel@vger.kernel.org I'd like to build a cluster for storing large amounts of data. The cluster would consist of slow (cheap) storage and fast (expensive) storage. I would like to migrate data from fast (expensive) storage to slow (cheap) storage if it wasn't accessed for, say, 6 months. Would ceph somehow help me achieve that? If not, do you know anything which comes to mind? -- Tomasz Chmielewski http://wpkg.org