From owner-freebsd-small Sat Jun 27 20:35:15 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id UAA16968 for freebsd-small-outgoing; Sat, 27 Jun 1998 20:35:15 -0700 (PDT) (envelope-from owner-freebsd-small@FreeBSD.ORG) Received: from antipodes.cdrom.com (castles233.castles.com [208.214.165.233]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA16959 for ; Sat, 27 Jun 1998 20:35:10 -0700 (PDT) (envelope-from mike@antipodes.cdrom.com) Received: from antipodes.cdrom.com (localhost [127.0.0.1]) by antipodes.cdrom.com (8.8.8/8.8.5) with ESMTP id UAA17007; Sat, 27 Jun 1998 20:34:02 -0700 (PDT) Message-Id: <199806280334.UAA17007@antipodes.cdrom.com> X-Mailer: exmh version 2.0zeta 7/24/97 To: "David Pennell" cc: "Marc Nicholas" , "Mike Smith" , "Peter Wallace" , "Christopher G. Petrilli" , "Andrzej Bialecki" , freebsd-small@FreeBSD.ORG Subject: Re: I'm back. In-reply-to: Your message of "Sat, 27 Jun 1998 22:43:11 EDT." <001f01bda23e$7ffb0030$27b6b38c@david.pennell.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sat, 27 Jun 1998 20:34:02 -0700 From: Mike Smith Sender: owner-freebsd-small@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > >Actually, the best design I've seen so far uses a battery-backed SRAM > >for initial storage, and then does a sweep every 10 minutes updating > >changed pages into flash. When the power is off at the end of the > >sweep, the battery gets disconnected, and then on power-up the SRAM is > >repopulated. More complex, sure, but for some applications... > > Who manufactured that one? 8( I don't remember. It wasn't a general-purpose unit though - sorry if I gave that impression. The rest of the system wasn't anything to write home about, it was just the two-level flash disk that caught my attention as a neat idea. I've also heard of systems where there's a smaller amount of SRAM used as a disk cache, with the intention again of reducing repeated write activity, but I don't know of anyone doing this commercially. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-small" in the body of the message