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- Path: erinews.ericsson.se!usenet
- From: etxzayl@cate1.ericsson.se (Johan Zeylon IN/SA/B)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Zip drive...~500K transfer rate?
- Date: 26 Mar 1996 16:22:36 GMT
- Organization: Ericsson Telecom AB
- Message-ID: <4j95kc$d16@erinews.ericsson.se>
- References: <4j6hot$bf8@hobbes.compusult.nf.ca>
- Reply-To: etxzayl@cate1.ericsson.se
- NNTP-Posting-Host: dill.ericsson.se
-
- In article bf8@hobbes.compusult.nf.ca, mworden@public.compusult.nf.ca (Mark Worden) writes:
- >I recently bought an Iomega Zip drive and am using it on an A3000. I was
- >told the transfer rate can be as high as 1MB/sec, and was surprised to
- >learn (using SysInfo) that the actual transfer rate is only around 578K/sec
- >(the internal Quantum hard drive is about 755K/sec).
- >
- >Now, I'm betting that this has to do with either the filing system (both
- >devices are formatted with Fast File System) or the A3000's SCSI
- >controller (or maybe both).
- >
- >Is there a way to increase this transfer rate? Does it mean I have to
- >invest in something like AFS, and/or a SCSI controller (perhaps GVP)?
- >
-
- If i use sysinfo (which you use) i get >3Mb/s from a Conner and >2Mb/s from
- a Quantum LPS on my A3000 with a rev-04 SCSI chip (the old one). Both use FFS2.04.
- The A3000 SCSI controller is not to be blamed.
- As far as i know sysinfo reads raw data directly from the drive and doesn't
- use the filing system.
- Therefore you should check your cabling/termination, a lot of errors on the
- bus will give you this behaviour.
-
- /Johan
-
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-