[5305] in linux-scsi channel archive
Re: Dumb question: Which is "better" SCSI or IDE disks?
daemon@ATHENA.MIT.EDU (George Farris)
Sun Dec 6 00:04:55 1998
To: linux-scsi@vger.rutgers.edu
In-Reply-To: Your message of "Sat, 05 Dec 1998 11:35:33 +1000."
<Pine.SCO.3.96.981205112429.18969A-100000@rvib2.rvib.org.au>
Date: Sat, 05 Dec 1998 10:40:13 -0800
From: George Farris <george@gmsys.com>
> 1. Some hard disk manufactures are using same disk drive (physically) to
> make SCSI and ATA. They only change the PCB board.
>
> 2. SCSI-1 and SCSI-2 have 8 bit data bus, while ATA have 16 bit data bus.
>
> 3. ATA got disk cache built in as well.
>
> 4. Some low end of SCSI host card is only 8 Bit card.
>
> Compare by yourself.
>
> Leonard
Come on. If you're going to post information like this at least do
some research **before** you post. Statements like this are just
plain misleading.
SCSI-2 is 8 bits wide, 10MB/second max transfer rate.
Ultra SCSI is 8 bits wide 20MB/second max transfer rate.
Ultra Wide SCSI is 16 bits wide, 40MB/second max transfer rate.
Newer SCSI-3 stuff is looking like upwards of 80MB/second transfer
rates. Then there is differential SCSI etc.
IDE is a good price/performance technology for average
workstations. Anyone that puts in a high performance server with
IDE drives, just plain doesn't know what they are doing or for some
reason or other is constrained by budget problems.
--
=======================================================================
George Farris - VE7FRG E-Mail : george@gmsys.com
G.M. Systems, Web page : http://www.gmsys.com
2570 Seaview Road, Phone/Fax : (250)743-1500
Mill Bay, B.C., Canada
V0R 2P0 We do pre-installed Linux systems.
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