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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!paladin.american.edu!howland.reston.ans.net!zaphod.mps.ohio-state.edu!wupost!csus.edu!netcom.com!gasman1
- From: gasman1@netcom.com (David A. Silva)
- Subject: Re: Can SCSI Transfer Rate be Increased??????
- Message-ID: <1992Dec24.005457.2257@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- X-Newsreader: TIN [version 1.1 PL8]
- References: <jim.725144057@pi-chan>
- Date: Thu, 24 Dec 1992 00:54:57 GMT
- Lines: 23
-
- Jim Lick (jim@ferkel.ucsb.edu) wrote:
-
- : >Currenly I am using a Future Domain 1660 with a Rodime 3259T and am
- : >obtaining XFER rates of about 860KB/s. This is not why I chose SCSI.
- : >I would like to increase the XFER value and would like a suggestion as
- : >to how this may be accomplished. I have a very knowlegeable friend who
- : >informed me that I would receive little or no performance boost by
- : >purchasing another mgfs. controller.
-
- : That is probably true. ISA SCSI boards don't vary much as far as
- : throughput is concerned. You could get faster response times by
- : using a caching controller, but your transfer rate probably would
- : stay about the same. It's also likely that your drive already has
- : its own cache.
- Jim
- I don't know about this. I am running an Adaptec 1542B on an ISA system
- with a hard drive comparable to the Rodime being compared, and the
- slowest transfer rate I got was 1800 KB/s, and with tweaking of the
- bus-on/off times and the DMA transfer speed, I've gotten it up to
- 2800-3000 KB/s. I have a friend with the EISA Ultrastor, and he is
- getting around 8000 KB/s with the internal cache turned off on the HA.
-
- David
-