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From: Greg Lehey <grog@lemis.com>
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Subject: Re: Sysadmin levels today?
In-Reply-To: <199708050046.KAA24990@genesis.atrad.adelaide.edu.au> from Michael Smith at "Aug 5, 97 10:16:25 am"
To: msmith@atrad.adelaide.edu.au (Michael Smith)
Date: Tue, 5 Aug 1997 10:33:31 +0930 (CST)
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Michael Smith writes:
> The Hermit Hacker stands accused of saying:
>> On Fri, 1 Aug 1997, Michael Smith wrote:
>>
>>> Yeah.  Not to mention that you can put 8 LUNs on each unit, which
>>> makes the correct answer 57 or 121 respectively.
>>
>> 	Damn, I forgot about that...I've never actually *seen* this done
>> though...what sort of 'max' has anyone seen hanging off of one scsi bus?
>
> Hmm, I've seen a bus entirely populated with MD21's, so 14 disks, and
> one with four 5-tape units for 20 tape drives.  I've also seen a
> controller that would let you put four SMD disks on a single SCSI ID
> at separate LUNs (in a Sequent, I think), so you can imagine what 28
> 1GB SMD disks would look and sound like 8)
>
> Still, the basic problem is the bus bandwidth; it's just not up to
> that sort of load.

You're jumping to conclusions here (or keeping some details quiet :-)
The required bandwidth depends on the application, not the number of
devices on the bus.

Greg