From owner-freebsd-questions Wed May 22 13:23:32 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id NAA23517 for questions-outgoing; Wed, 22 May 1996 13:23:32 -0700 (PDT) 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 NAA23511 for ; Wed, 22 May 1996 13:23:29 -0700 (PDT) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id NAA04906; Wed, 22 May 1996 13:18:01 -0700 From: Terry Lambert Message-Id: <199605222018.NAA04906@phaeton.artisoft.com> Subject: Re: Raid support To: ron@infi.net (Ron Steele) Date: Wed, 22 May 1996 13:18:00 -0700 (MST) Cc: questions@freebsd.org In-Reply-To: <1.5.4.32.19960522152342.00669058@mailhost.infi.net> from "Ron Steele" at May 22, 96 11:23:42 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-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > > What is the current state of support for raid controler's? > There is a driver for the Compaq controllers for the Proliant and similar machine's SCSI RAID controllers. The driver is not integrated into the source tree. The Adaptec 3940 has insufficient non-NDA documentation to allow a driver to be written. Missing are the extensions for controller instead of host calculation of checksum/ECC/Hamming codes. It is unlikely that the 3940 will be supported as anything other than a normal SCSI controller, unless someone signs NDA and becaomes a sole source for a binary only driver module. There are negotiations under way with DPT. It looks like the DPT line of controllers, including the RAID controllers, will be supported some time in the near future. External RAID arrays are accessed as if they were simply normal SCSI devices, and function without modification with all supported SCSI controllers (including the 3940 operating as a non-RAID SCSI controller). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.