Date: Tue, 3 Sep 1996 00:27:29 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: bmcgloth@mail.vt.edu (Brian D. McGlothlin) Cc: freebsd-hardware@FreeBSD.org Subject: Re: DAT for sure! Message-ID: <199609021457.AAA20616@genesis.atrad.adelaide.edu.au> In-Reply-To: <199609020340.XAA03416@sable.cc.vt.edu> from "Brian D. McGlothlin" at Sep 1, 96 11:40:40 pm
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Brian D. McGlothlin stands accused of saying: > > First of all, let me thank all of those that sent comments/suggestions to > the DAT or removable post. Now let me run this by you folks. > > An adaptec 1522 card (availability and win95 compatability) > and an HP C1534 2.0 GB 4mm DAT drive. Do _NOT_ buy a 1522. They're junk. If you have a PCI system of reasonably recent vintage with NCR SCSI support in the BIOS, get an NCR-810-based SCSI card. Being at VT, there's probably someone there on the faculty who can point you at a local supplier, or failing that somone here who can point you at same. If you have a PCI system but no NCR support (pretty rare, but possible), then get an NCR-based card with an onboard BIOS. If you don't have PCI, then get an Adaptec 1540-series controller. A 1540CP is probably your best bet. The issue here is that the 1522 is based on a really cheezy SCSI chip that requires lots of CPU attention, and thus delivers really poor performance. Both the 1540 and the NCR-based controllers (the NCR will be cheaper, incidentally) do busmaster DMA, and reap all the rewards of real SCSI controllers. > Brian D. McGlothlin -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] Collector of old Unix hardware. "Where are your PEZ?" The Tick [[
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