From owner-freebsd-performance@FreeBSD.ORG Tue Sep 2 15:48:09 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3E12616A4BF; Tue, 2 Sep 2003 15:48:09 -0700 (PDT) Received: from Chow.corp.media.net (rottie.media.net [66.113.65.4]) by mx1.FreeBSD.org (Postfix) with ESMTP id 548EF43FFB; Tue, 2 Sep 2003 15:48:08 -0700 (PDT) (envelope-from max.clark@media.net) Received: from MCLARK (76.0.6.10.IN-ADDR.ARPA [10.6.0.76]) by Chow.corp.media.net (Netscape Messaging Server 4.15) with SMTP id HKLZ4A00.N3E; Tue, 2 Sep 2003 15:43:22 -0700 From: "Max Clark" To: "Dan Nelson" Date: Tue, 2 Sep 2003 15:53:53 -0700 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal In-Reply-To: <20030902224136.GA98381@dan.emsphone.com> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 cc: freebsd-hackers@freebsd.org cc: freebsd-performance@freebsd.org cc: freebsd-questions@freebsd.org Subject: RE: 20TB Storage System X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Sep 2003 22:48:09 -0000 Depends on whether you plan on crashing or not :) According to http://lists.freebsd.org/pipermail/freebsd-fs/2003-July/000181.html, you may not want to create filesystems over 3TB if you want fsck to succeed. I don't know if that's using the default newfs settings (which would create an insane number of inodes), though. - This is a big problem (no pun intended), my smallest requirement is still 5TB... what would you recommend? The smallest file on the storage will be 500MB. To sustain only 30MByte/s across the entire set? Doesn't really matter, since even a single disk could do that. - What would I see better performance with ccd or vinum? So a better question isn't if I can sustain with 30MByte/s but what would I expect to maintain?