From owner-freebsd-hackers Thu Feb 1 13:31:22 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id NAA01663 for hackers-outgoing; Thu, 1 Feb 1996 13:31:22 -0800 (PST) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id NAA01653 for ; Thu, 1 Feb 1996 13:31:16 -0800 (PST) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id OAA13735; Thu, 1 Feb 1996 14:18:22 -0700 From: Terry Lambert Message-Id: <199602012118.OAA13735@phaeton.artisoft.com> Subject: Re: a question about boot-manager To: joerg_wunsch@uriah.heep.sax.de Date: Thu, 1 Feb 1996 14:18:22 -0700 (MST) Cc: freebsd-hackers@FreeBSD.org In-Reply-To: <199602010748.IAA25596@uriah.heep.sax.de> from "J Wunsch" at Feb 1, 96 08:48:27 am X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.org Precedence: bulk > > 3) Anyone who has sector sparing off on their SCSI drives so they > > can use spindle-sync with a ccd driver without losing rotations, > > so they have to substitute BAD144 or similar software sparing. > > Can you elaborate in not more than 10 lines? I don't see why somebody > has to turn off sector sparing in order to use spindle sync. In less than 10 lines: "identical drives" does not mean that the bad spots are in the same location on each drive. That is, for spindle sync applications, you will probably want to map out the bad spot of one drive on both drives and present "logically perfect" media above the spindle-sync driver, or spindle-sync won't do you much good. The same arguments apply to zone expansion relocating track-to-track seek locations on ZBR drives. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.