Subject: Re: SCSI
From: david (minion@mtaonline.net)
Date: Fri Jun 28 2002 - 16:11:00 AKDT
6/27/02 11:31:34 PM, Adam Elkins <i-robot@gci.net> wrote:
>
>Arthur Corliss wrote:
>
>>>I know SCSI in the old days was faster than IDE, but I've lost
>>>track....Is there still an advantage with SCSI? Now with IDE drives
>>>having caches and all....Are SCSI still something to be had?
>>>
>>
>>SCSI blows the doors off of IDE for the most part. Keep in mind that IDE, for
>>all of the speed improvements, is still CPU intensive (bad CDR burns because
>>of CPU utilisation is rare on SCSI compared to IDE). Also keep in mind that
>>IDE drives are consumer-grade devices, and have no where near the MTBF of SCSI
>>devices. Oh, and that silly IDE limitation of two devices per controller?
>>
>>The high end in SCSI has platter speeds of 15,000 RPMs (and has been available
>>for a couple of years, now). IDE typically trails SCSI in the RPM race (and
>>here, unlike MHz in CPUs, RPMs make a *huge* difference, especially for large
>>block transfers where your cache is useless). As a side note, does anyone
>>know what the fastest EIDE on the market is? Seems that market doesn't make
>>that big a deal of it like they do for SCSI.
>>
>>If all you have in the machine is one drive, EIDE will work just fine in most
>>cases (since there's no other devices to contend with on the bus). But once
>>you start adding more devices, you'll get greater sustained throughput on
SCSI.
My 2 cents is that I would rather have SCSI drives even if they are outdated and
under the old standards. They will run forever 24/7. They are built to last
where EIDE are just built to run.
david
>>
>>--
>>
>> --Arthur Corliss
>> Bolverk's Lair -- http://arthur.corlissfamily.org/
>> Digital Mages -- http://www.digitalmages.com/
>> "Live Free or Die, the Only Way to Live" -- NH State Motto
>>
>>
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>>
>I'd like to try SCSI out I think....or I might just hold off for
>solid-state drives. No rpms needs...
>
>Adam
>
>
>
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