Date: Sat, 08 Feb 1997 20:37:37 -0500 From: Richard Hwang <rhwang@bigpanda.com> To: Chris Bura <chris@MAIN.Netcorps.com> Cc: freebsd-isp@freebsd.org Subject: SCSI-to-SCSI RAID controllers (was "RAID ? ") Message-ID: <199702090137.UAA01887@megazone.bigpanda.com> In-Reply-To: Your message of "Fri, 07 Feb 1997 14:02:34 PST." <199702072202.OAA03484@main.netcorps.com>
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There seems to be much interest in RAID for FreeBSD, but there doesn't seem to be anything in the handbook nor FAQ regarding SCSI-to-SCSI RAID controllers. I would be more than happy to write something on SCSI-to-SCSI RAID controllers, as I have been researching them for awhile, and will be working with the CMD Daytona (see below) in the next few weeks. > Well after checking out Mylex's website I noticed a product called > the DAC960SUI which connects the a SCSI controller. It's supposed to > just be seen as a hard drive as far as the OS is concerned. > Have no idea what it costs. Can't seem to find a retailer around with > enough IQ to figure out that if it's not in stock, it still may exist... CMD Technology Inc. (http://www.cmd.com/) also makes SCSI-to-SCSI RAID controllers. They also have a turnkey system, the Daytona, which includes a RAID controller and a drive enclosure with redundant power supplies, hot-swappable drive canisters, and an extra slot for a tape drive. The CMD CRD-5500 RAID controller is their top of the line product. It supports RAID levels 0, 1, 1+0, 4, and 5, and comes standard with 16MB cache RAM (expandable to 512MB with 72-pin SIMMs). It comes in the standard 5.25" full-height form factor, so you can put it into any standard case which has full-height bays. This beast has 9 slots, in which you can put the following SCSI interface modules: CRD-5530 10MB/s single-ended FAST/SCSI-2 (disk channel only), $395 CRD-5540 20MB/s single-ended FAST/WIDE SCSI-2 (disk/host channel), $495 CRD-5560 20MB/s differential FAST/WIDE SCSI-2 (disk/host channel), $595 **All prices are list prices The CRD-5500 by itself (no modules) lists for $3,525. The CRD-5500 controller supports any combination of interface modules, with a maximum of 4 host channels and a maximum of 8 disk channels. Yes, this means that this one RAID controller can be connected to multiple FreeBSD machines. I'm not exactly sure what the limitations are with this, though. CRD-550-015 CRD-5500 with 1 single-ended FAST/WIDE SCSI-2 host module and 5 FAST SCSI-2 The CRD-5500 can also be hooked up to another CRD-5500 using the Failover kit (P/N: AAK-005500-000) for redundancy. The Daytona contains a CMD CRD-5300 RAID controller and an enclosure with support for either 4 3.5" half-height disks or 6 3.5" low profile disks. It comes with 16M cache, and has hot swappable redundant fans and power supplies. The following is a table of model numbers and list prices for the Daytona: HWS-005931-141 4 3.5" half-height canisters, single-ended FAST SCSI-2 list $5,995 HWS-005931-161 6 3.5" low profile canisters, single-ended FAST SCSI-2 list $5,995 HWS-005931-241 4 3.5" half-height canisters, single-ended FAST/WIDE SCSI-2 list $6,118 HWS-005931-261 6 3.5" low profile canisters, single-ended FAST/WIDE SCSI-2 list $6,118 HWS-005932-141 4 3.5" half-height canisters, differential FAST SCSI-2 list $6,395 HWS-005932-161 6 3.5" low profile canisters, differential FAST SCSI-2 list $6,395 HWS-005932-241 4 3.5" half-height canisters, differential FAST/WIDE SCSI-2 list $6,518 HWS-005932-261 6 3.5" low profile canisters, differential FAST/WIDE SCSI-2 list $6,518 ** All Daytonas have 1 host port and 2 SCSI channels, and are expandable to 128M of cache There will supposedly be a slave drive box (to be available soon) so you can attach more drives to the Daytona. No word on when that might be available, though. As for availability, CMD recently announced that it is distributing the Daytona through Tech Data (large distributor), so it shouldn't be *that* hard to find. I apologize for the lengthy message, but some of this info isn't on their web site (I had to get them to fax it to me). --- Richard Hwang rhwang@bigpanda.com Big Panda House Consulting http://www.bigpanda.com
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