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Date:      Thu, 2 Mar 2000 00:00:58 -0500 (EST)
From:      "Jasper O'Malley" <jooji@nickelkid.com>
To:        Marc Slemko <marcs@znep.com>
Cc:        chat@FreeBSD.ORG
Subject:   Re: M$ one-ups UNIX???
Message-ID:  <Pine.BSF.4.21.0003012354440.86341-100000@cornflake.nickelkid.com>
In-Reply-To: <Pine.BSF.4.20.0003011930400.36258-100000@alive.znep.com>

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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



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