Date: Tue, 11 Jun 1996 17:01:49 -0500 (CDT) From: Ben Black <black@MR.Net> To: freebsd-questions@FreeBSD.org, bsdi-users@bsdi.com, agifford@infowest.com Subject: Re: Adaptec2940UW vs. BusLogicBT-958 (opinions?) Message-ID: <199606112201.RAA02405@galileo.mr.net>
next in thread | raw e-mail | index | archive | help
one important issue is whether you really need ultrawide at all. the disks certainly can't keep up, so it only matters if you have lots of drives on the same chain, in which case you may be better off using multiple regular fast scsi controllers. Ben black@mr.net > Okay BSD users (both BSD/OS 2.1 and FreeBSD), which SCSI-3 UltraWide > controller is superior (performance wise), the BusLogic BT-958 OR the > Adaptec 2940UW? I've heard it both ways. Someone told me that the BusLogic > card has a larger tag queue and that such a feature made it superior. > Another person explained that the Adaptec uses newer tag queue command > processing that is much faster than the older BusLogic technology, and that > makes the Adaptec superior. > > I'm planning on outfitting two machines with whichever controller appears > the better. I will be using SCSI-2 Fast&Wide drives to begin with, but will > later add UltraWide drives as they become available. > > I have yet to decide whether to run BSD/OS or FreeBSD on them. Please > refrain from commenting on the merits of BSD/OS or FreeBSD over the other, > since my question has little to do with which OS I chose (except whether the > OS solidly supports the SCSI controller in question). I've used both OS's > on other systems and like each for different reasons. > > Which is superior? Is there any real data? Has anyone used both cards in > both OS environments? > > Thanks in advance, > Aaron "A SCSI-3 UltraWide Newbie" Gifford > > --=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=-- > Aaron D. Gifford InfoWest, 1845 W. Sunset Blvd, St. George, UT 84770 > InfoWest Networking Phone: (801) 674-0165 FAX: (801) 673-9734 > <agifford@infowest.com> Visit InfoWest at: "http://www.infowest.com/" > ICBM: 37.07847 N, 113.57858 W > "Southern Utah's Finest Network Connection" > --=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=--=+=-- >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199606112201.RAA02405>