From: Randal Whittle (rwhittle_at_usa.net)
Date: Sun Apr 23 2000 - 00:47:14 EDT
At 07:58 PM 04/22/2000 -0500, you wrote:
>The problem with SCSI is that, unlike IDE, it really is not universal, this
>is to say, you can not connect just anyones drive and any controller and
>have good service.
Baloney. SCSI incompatibility is ancient history. Virtually
every good SCSI device (including host adapters) today conforms to the ASPI
protocol. It has been that way for at least 7, perhaps as much as 10 years.
>Indeed, early on, there were SCSI controllers for just that brand of
>harddrive or even just a series within a companys line.
Again, ancient history. And certainly not exclusive to SCSI. 9
years ago I was upgrading a HD on an HP Vectra PC only to find out that the
ESDI controller I was trying to add an additional HD to wouldn't play nice
with any other ESDI HD. That had nothing to do with SCSI. It had to do
with the old days--lots of proprietary crap going on.
>IDE, on the other hand, because the controller is really on the drive, is
...and because the "controller" is on the HD, that also caused
incompatibilities with other HD's. Frequently, different Mfgrs' HD's
wouldn't Master-Slave properly, and sometimes even incompatibilities within
the *same* Mfgr., but different models.
Never had that problem with SCSI. The only time a problem arose
(again, ancient history) was when cheap, off-brand Host Adapters were used
(or non-ASPI-compliant HA's).
>Apple computer, a long supporter of SCSI, is now putting IDE in its
...mainly so their machines could have access to less-expensive HD
upgrades from a larger market of NB-sized IDE drives out there. The only
lesson Apple has learned has been that their proprietary strategy has
nearly killed them. NB-sized SCSI HD's were pretty much a proprietary
thing for them--and raised the cost of their machines significantly. One
need only look at the desktop HD market to see you can get a 40 GB HD for
less than $300, but that same $300 will get you less than 1/2 that capacity
>And, let's not forget, PCMCIA is nothing more than an extension of IDE.
Not at all. Its an extension of the 16-bit ISA bus. Apparently
you don't know what you're talking about.
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