From owner-freebsd-chat Wed Mar 1 21: 1: 4 2000 Delivered-To: freebsd-chat@freebsd.org Received: from cornflake.nickelkid.com (cornflake.nickelkid.com [216.116.135.26]) by hub.freebsd.org (Postfix) with ESMTP id 4A7EC37BD97 for ; Wed, 1 Mar 2000 21:01:03 -0800 (PST) (envelope-from jooji@cornflake.nickelkid.com) Received: from localhost (jooji@localhost) by cornflake.nickelkid.com (8.9.3/8.9.3) with ESMTP id AAA86444; Thu, 2 Mar 2000 00:00:59 -0500 (EST) (envelope-from jooji@cornflake.nickelkid.com) Date: Thu, 2 Mar 2000 00:00:58 -0500 (EST) From: "Jasper O'Malley" To: Marc Slemko Cc: chat@FreeBSD.ORG Subject: Re: M$ one-ups UNIX??? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Wed, 1 Mar 2000, Marc Slemko wrote: > Keep it on the Unix level for an easier example. Say someone mails > a 100 meg file to 20 people that have mailboxes on a machine. So > there will be 100 megs in each /var/mail/user mailbox. The idea > behind this feature is that it could magically detect that and > combine the bodies to point to a single reference on disk that is > read-only; if changes are made, then that block or whatever is copied. This is already a feature of Microsoft Exchange Server, where it's called Single Instance Message Storage (it's also a feature of umpteen other database-structured mail systems, including crufty old cc:Mail). It's possibly where "Bill Bolosky and two Microsoft colleagues" (who appear to have been thrown under the bus for old Bill, here, in the official credit-for-the-idea department) pulled the idea from. I wouldn't be surprised if we're giving them too much credit, though, by assuming that they haven't merely reinvented true sym/hardlinks for the Winblows 2000 family. Cheers, Mick To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message