*BSD News Article 26135


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From: othman@oasys.pc.my (Othman Ahmad)
Newsgroups: comp.os.386bsd.questions,comp.windows.x.i386unix
Subject: Re: If you were to assemble a new machine...
Message-ID: <HVFcgc2w165w@oasys.pc.my>
Date: Tue, 18 Jan 94 10:19:40 +800
References: <1994Jan15.165808.10213@kf8nh.wariat.org>
Organization: Telekom Malaysia, Kota Kinabalu, Sabah, Malaysia
Lines: 25

bsa@kf8nh.wariat.org (Brandon S. Allbery) writes:

> 
> Depends on what your limitations are.  A SCSI host adapter takes one bus slot
An IDE controller needs ZERO bus slot. It uses the ones on the floppy
controller, and if you need another IDE disk, just parallel the ATBUS
connector.

> The performance of dual IDE drives is lower than on SCSI:  the IDE "bus" has
> very poor contention management and doesn't support interleaved access (e.g.
> send commands to both drives at once).  DOS doesn't care about this, but *ix
> performs much better when it can take advantage of this; Linux certainly does
> I would expect that *BSD does as well.
It has nothing to do with IDE definition. It is more due to the lack of 
bus mastering controller. If you want performance, equivalent to SCSI,
buy an IDE bus mastering controller. You'll still get the advantage of
compatibility and easy upgrade but now it almost cost as much as a SCSI system.
	With that controller, I can buy an extra hard disk.

It is all a matter of cost. If I have the money, why should I buy a PC in the
first place. There are people who even bought a SPARC workstation.
SABAH is HEAVEN. Beautiful islands, mountains and jungles are next to 5 star 
hotels. There are no natural and very few man-made disasters,
               BUT for how long will it last?
Disclaimer: I only speak for myself