[Gllug] Computer Shopping

[Peter Childs]

On Sunday 27 July 2003 19:28, Henrik Morsing wrote:
> On Sun, 27 Jul 2003, Andy McGarty wrote:
> > > PS If you are going to surgest SCSI your going to have to explain why
> > > very carefully because 18Gb hard disks do not compare well to 80Gb ones
> > > for IDE when SCSI cards are expensive too. If its needed I'm going to
> > > need to say
> >
> > why
> >
> > > and currently I don't know at all!
>
> 1) Reliability
> 2) Speed
> 3) Tagged command queing
> 4) Intelligent devices
> 5) Independant access to memory and other devices
> 6) Multiple open commands on one channel possible
> 7) Write verify
>
> There, almost ten reasons for you. There are more but I can't remember
> them right now. Believe it or not but SCSI is value for money and IDE is
> not. And who needs 80GBs anyway?
>
	Fine but... But SCSI has been around 20 or 30 years I was using SCSI on my 
Atari ST, our Bull uses SCSI (like UNIX so maybe thats a good thing) So if 
SCSI had the space I would jump at it. However when your users are used to PC 
with 80GB or more trying to get them to buy hard drives 1/4 of the size for 
more money just does not work.
	Maybe the question is what has SCSI done to improve in the last 20 years? 
	Even scsi interface cards are not cheap either. Unfortinally If I'm going to 
sell it on those reasons I'm going to need proof that its true. So does 
anyone know where I can find some stats. Borring I know but very important. 
	Oh and lots of people need that much space. We have a database thats hmm 
4.4Gb and its not even half size yet. Postgres database have this habit of 
growing on disc..... People are thinking of adding pictures and sound to our 
currently text only database. We have a machine that writes a whole DVD a 
day.
	It sounds like Scsi is like a posh car. where as IDE is a consumer item. I 
think its like try to compare a posh car with a double decker bus.....


Peter Childs

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