linux-kernel - Re: [Scst-devel] Integration of SCST in the mainstream Linux kernel

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Date:	Mon, 4 Feb 2008 21:06:10 +0100
From:	4news@...esintesi.it
To:	scst-devel@...ts.sourceforge.net
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>,
	Mike Christie <michaelc@...wisc.edu>,
	Vladislav Bolkhovitin <vst@...b.net>,
	linux-scsi@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Subject: Re: [Scst-devel] Integration of SCST in the mainstream Linux kernel

On lunedì 4 febbraio 2008, Linus Torvalds wrote:
> So from a purely personal standpoint, I'd like to say that I'm not really
> interested in iSCSI (and I don't quite know why I've been cc'd on this
> whole discussion) and think that other approaches are potentially *much*
> better. So for example, I personally suspect that ATA-over-ethernet is way
> better than some crazy SCSI-over-TCP crap, but I'm biased for simple and
> low-level, and against those crazy SCSI people to begin with.

surely aoe is better than iscsi almost on performance because of the lesser 
protocol stack:
iscsi ->  scsi - ip - eth
aoe -> ata - eth

but surely iscsi is more a standard than aoe and is more actively used by 
real-world .

Other really useful feature are that:
- iscsi is capable to move to a ip based san scsi devices by routing that ( 
i've some tape changer routed by scst to some system that don't have other 
way to see a tape).
- because it work on the ip layer it can be routed between long distance , so 
having needed bandwidth you can have a really remote block device spoking a 
standard protocol between non ethereogenus systems.
- iscsi is now the cheapest san avaible.

bye,
marco.

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