From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: Summary of the Multi-Path BOF at OLS and future directions
Date: Fri, 8 Aug 2003 13:15:43 +0100
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In-Reply-To: <64655AAA92E6ED46B9AC9421260D96A5025BD653@srmanning.lss.emc.com>; from jansen_frank@emc.com on Fri, Aug 08, 2003 at 08:13:11AM -0400
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To: "jansen, frank" <jansen_frank@emc.com>
Cc: =?iso-8859-1?Q?'Josef_M=F6llers'?= <josef.moellers@fujitsu-siemens.com>, Christoph Hellwig <hch@infradead.org>, James Bottomley <James.Bottomley@steeleye.com>, SCSI Mailing List <linux-scsi@vger.kernel.org>

On Fri, Aug 08, 2003 at 08:13:11AM -0400, jansen, frank wrote:
> The delineation between the EMC boxes that require vs. not require
> a "TRESPASS" command lies not with their age, but rather their family.
> The CLARiiON family of Storage Arrays require a "TRESPASS" command to
> move a LUN from one redundant Storage Processor (SP) to another.  On the
> other hand, Symmetrix Storage Arrays do not use any such behavior.  In
> a nutshell, the Symmetrix is active on all paths, on which the LUN is
> presented, whereas the CLARiiON is active on one SP and passive on the
> other SP.

So it's rather DG arrays vs EMC ones, ok.