Re: SCSI/IDE and RAID [Was: 120 gb is the Largest hard drive I can put in my 4550?]

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#343

From: Cristian Croitoru
Date: Thu, 04 Dec 2003 23:40

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"Terry Collins" :
>
> For home and SOHO and SME, IDE is probably quite okay.
>
> But IDE isn't SCSI and without SCSI, you can not do RAID.
>
> It really is a "business risk"
> How much do you loose per hour when the computer system goes down?

Why do you say "without SCSI, you can not do RAID"?
We have here 4 separate RAID systems on IDE.. RAID 0, 1, 0/1 and 5
One has 1TB+ volume, six 200GB HDs on a six channel IDE controller

One of the advantages of SCSI against IDE is "command queuing"
This means that if the controller receives a number of commands and it is
more efficient (time wise) to process them in a different order, it will do
that.
Parallel ATA can not do that BUT SATA will!

There is another solution I am looking into now: a self contained RAID 15
hotswap slots IDE enclosure that has a SCSI bridge so you can extend your
server with an external pseudo-SCSI massive store..

So there is scope..

Cristian Croitoru

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From: "Cristian Croitoru" <c_croitoru@hotmail.com>
Newsgroups: alt.sys.pc-clone.dell,aus.computers
Subject: Re: SCSI/IDE and RAID [Was: 120 gb is the Largest hard drive I can put  in my 4550?]
Date: Fri, 5 Dec 2003 09:40:02 +1000
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