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Dell EMC VPLEX: SAN Connectivity Implementation Planning and Best Practices

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Dell EMC VPLEX: SAN Connectivity Implementation Planning and Best Practices Best Practices Dell EMC VPLEX: SAN Connectivity Implementation planning and best practices Abstract This document describes SAN connectivity for both host to Dell EMC™ VPLEX™ front-end and VPLEX to storage array back end. This document covers active/active and active/passive and ALUA array connectivity with illustrations detailing PowerStore™, Dell EMC Unity™ XT, and XtremIO™. Included also is information for metro node connectivity. January 2021 H13546 Revisions Revisions Date Description May 2020 Version 4: Updated ALUA connectivity requirements January 2021 Added metro node content Acknowledgments Author: VPLEX CSE Team [email protected] This document may contain certain words that are not consistent with Dell's current language guidelines. Dell plans to update the document over subsequent future releases to revise these words accordingly. This document may contain language from third party content that is not under Dell's control and is not consistent with Dell's current guidelines for Dell's own content. When such third party content is updated by the relevant third parties, this document will be revised accordingly. The information in this publication is provided “as is.” Dell Inc. makes no representations or warranties of any kind with respect to the information in this publication, and specifically disclaims implied warranties of merchantability or fitness for a particular purpose. Use, copying, and distribution of any software described in this publication requires an applicable software license. Copyright © January 2021 Dell Inc. or its subsidiaries. All Rights Reserved. Dell Technologies, Dell, EMC, Dell EMC and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners. [1/19/2021] [Best Practices] [H13546] 2 Dell EMC VPLEX: SAN Connectivity | H13546 Table of contents Table of contents Revisions............................................................................................................................................................................. 2 Acknowledgments ............................................................................................................................................................... 2 Table of contents ................................................................................................................................................................ 3 Executive summary ............................................................................................................................................................. 5 1 Frontend connectivity ................................................................................................................................................... 7 1.1 Frontend/host initiator port connectivity .............................................................................................................. 7 1.2 Host cross-cluster connect ............................................................................................................................... 11 1.3 VBLOCK and VPLEX front end connectivity rules ........................................................................................... 12 2 ESXi path loss handling ............................................................................................................................................. 14 2.1 Path loss handling semantics (PDL and APD) ................................................................................................. 14 2.1.1 Persistent device loss (PDL) ............................................................................................................................ 14 2.1.2 vSphere storage for vSphere 5.0 U1 ................................................................................................................ 15 2.1.3 vSphere storage for vSphere 5.5 ...................................................................................................................... 15 2.1.4 APD handling .................................................................................................................................................... 16 2.2 vSphere storage for vSphere 5.1 ...................................................................................................................... 17 2.2.1 Disable storage APD handling .......................................................................................................................... 17 2.2.2 Change timeout limits for storage APD ............................................................................................................ 17 2.2.3 PDL/APD references ........................................................................................................................................ 18 3 VPLEX backend array connectivity ............................................................................................................................ 19 3.1 Back-end/storage array connectivity ................................................................................................................ 19 3.1.1 Active/active arrays .......................................................................................................................................... 19 3.1.2 Active/passive and ALUA arrays ...................................................................................................................... 23 3.1.3 Additional array considerations ........................................................................................................................ 29 4 XtremIO connectivity .................................................................................................................................................. 30 4.1 XtremIO overview ............................................................................................................................................. 30 4.2 VPLEX connectivity to XtremIO ........................................................................................................................ 30 4.2.1 Single engine/single X-Brick ............................................................................................................................. 31 4.2.2 Single engine/dual X-Brick ............................................................................................................................... 32 4.2.3 Single engine/quad X-Brick .............................................................................................................................. 33 4.2.4 Dual engine/single X-Brick ............................................................................................................................... 34 4.2.5 Dual engine/dual X-Brick .................................................................................................................................. 35 4.2.6 Dual engine/quad X-Brick ................................................................................................................................. 36 4.2.7 Quad engine/single X-Brick .............................................................................................................................. 37 4.2.8 Quad engine/dual X-Brick ................................................................................................................................. 38 3 Dell EMC VPLEX: SAN Connectivity | H13546 Table of contents 4.2.9 Quad engine/quad X-Brick ............................................................................................................................... 39 4.3 XtremIO 6 X-Brick connectivity ......................................................................................................................... 40 4.3.1 Solution 1 .......................................................................................................................................................... 40 4.3.2 Solution 2 .......................................................................................................................................................... 42 5 PowerStore and Dell EMC Unity XT .......................................................................................................................... 44 5.1 Metro node feature ........................................................................................................................................... 44 5.2 PowerStore ....................................................................................................................................................... 44 5.3 Dell EMC Unity XT ............................................................................................................................................ 45 5.4 Metro node connectivity .................................................................................................................................... 47 5.5 Backend connectivity ........................................................................................................................................ 47 5.6 Dell EMC Unity XT and single-appliance PowerStore connectivity .................................................................. 48 5.7 PowerStore dual-appliance connectivity .......................................................................................................... 50 5.8 Frontend/host initiator port connectivity ...........................................................................................................
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