From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Little Subject: RE: multipath and san fabric Date: Tue, 14 Nov 2006 08:09:20 -0500 Message-ID: <200611140809.21110.jslittl@hendricks.org> Reply-To: jslittl@hendricks.org, device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: dm-devel@redhat.com Cc: James.Smart@emulex.com, egoggin@emc.com List-Id: dm-devel.ids Hi all Wow. thanks for the responses... James Smart wrote on 11/13/2006 02:54:15 PM: > >>> Example 2: > >>> Fabric A contains HBA1, TargetPort1, and TargetPort3. > >>> Typically a zone > >>> would exist within Fabric A that contains these 3 ports. > >>> Fabric B contains HBA2, TargetPort2, and TargetPort4. > >>> Typically a zone > >>> would exist within Fabric B that contains these 3 ports. > >>> The storage array contains 2 controllers, with 2 ports per > >>> controller. > >>> Meaning TargetPort1 and TargetPort2 are on controller A, > >>> and TargetPort3 > >>> and TargetPort4 are on controller B. The ports are cross > >>> connected on > >>> the fabrics for redundancy. All storage can be seen from > >>> any port. > >>> -- > >>> This would ahve 4 DM paths > >>> The I_T nexus's are: > >>> HBA1_TargetPort1 > >>> HBA1_TargetPort3 > >>> HBA2_TargetPort2 > >>> HBA2_TargetPort4 Ok I'm new to SAN and multipathing so maybe it's just the way it is worded. Here is what we have and the instructions that were given to me. #### FCSW00 xxx.xxx.xxx.233 Fabric A FCSW01 xxx.xxx.xxx.234 Fabric B FCSW02 xxx.xxx.xxx.235 Fabric A FCSW03 xxx.xxx.xxx.236 Fabric B Summary: One HBA is attached to each fabric; two zones per HBA. One is zoned to a port on SPA and one is zoned to a port on SPB We have a CX600 which has 4 ports per SP. So, it could be zoned to SPA0 (0-3)and SPB0(0-3) #### If I understand correctly what I have is Example 2 (typo corrected). Then I would, for an hba connected to Fabric A on a port on FCSW00, setup a zone on FCSW00 and another on FCSW02. The same would apply for the hba in Fabric B using FCSW01 and FCSW03. Is this correct or am I still lost? Thanks, John