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Article View: comp.sys.mac.hardware.storage
Article #44

Re: Comparisons of 2-gig AV drives?

#44
From: Mark Schultz
Date: Tue, 31 Oct 1995 21:04
28 lines
2299 bytes
In <475nuh$45n@noc.tor.hookup.net>, Richard Whitehouse <cvanderb@toronto.cbc.ca> writes:
>>If you are looking for an Ultra SCSI 3 drive (Fast 20) then, you'd
>>first need a Fast-20 SCSI adaptor (like an Adaptec 2940UW).  Two of
>>the best 2 GB Ultra SCSI drives are the Seagate Barracuda 4LP
>>(ST32171) and the Quantum Atlas II (XP32181).  Add "W" to the end of
>>the vendor part numbers if you need an Ultra Wide drive (40MB/sec).
>
>These numbers that you mentioned (20MB/Sec and 40MB/sec) are not
>sustained-throughput rates, I just wondered whether you were aware
>of that.  They are probably burst-mode rates, or perhaps they are
>the maximum capability of the bus.  Some manufacturers like Seagate
>do not like to tell you what their sustained throughput numbers are,
>they would rather mention burst-mode numbers because they sound more
>impressive.  Micropolis are at least honest enough to tell you what
>their real sustained throughput rates are.  Be aware that these 
>drives will not be capable of sustained throughput *anywhere near* 
>those numbers.  The sustained throughput will probably be somewhere 
>between 5MB/sec and 10MB/sec.
>
Check out www.macromedia.com/Brain/New.media/Articles/Digitalvideo.html
for a thorough review of the latest A/V drives.   Me, the fact that I
work on these things probably qualifies my opinion as biased, but I like
our (IBM) drives.


Mark Schultz [mschultz@watson.ibm.com] or [mds@henry.ece.cmu.edu]                                                                             
Guitar, Sound Engineering, Ultimate, SFB, Corvettes, Magnetics, and The Lord
Jesus Christ.  NOT in that order.  This .SIG subject to change at any time.
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Path: arc1-ca.pugleaf.net!watnews.watson.ibm.com!usenet
From: mschultz@watson.ibm.com (Mark Schultz)
Newsgroups: comp.sys.mac.hardware.storage,comp.periphs.scsi,rec.audio.pro
Subject: Re: Comparisons of 2-gig AV drives?
Date: 31 Oct 1995 21:04:56 GMT
Organization: IBM T.J. Watson Research Center
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