Brocade Communications Systems StorageWorks 4400 - Enterprise Virtual Array User Manual

Browse online or download User Manual for Network switches Brocade Communications Systems StorageWorks 4400 - Enterprise Virtual Array. Best Practices for the HP EVA Array using VMware vCenter Site

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Table of contents
Introduction ......................................................................................................................................... 2
HP StorageWorks Continuous Access EVA .......................................................................................... 3
Data replication ........................................................................................................................... 3
DR groups and copy sets ............................................................................................................... 3
Write history log (log disk) ............................................................................................................ 3
Continuous Access failover ............................................................................................................ 3
Solution Scope .................................................................................................................................... 4
Software and hardware configuration ................................................................................................ 6
Configuration details ........................................................................................................................ 6
VMware vCenter Server setup ........................................................................................................ 6
Basic VMware ESX Server installation ............................................................................................. 6
SAN switch zoning ....................................................................................................................... 6
Configure EVAs at source and destination sites ................................................................................ 7
EVA disk group capacity planning ................................................................................................. 8
Configure DR groups in HP Command View .................................................................................... 9
VMware vCenter Site Recovery Manager and Continuous Access EVA ................................................... 9
Setting up the Storage Replication Adapter and Command View EVA ................................................ 9
Site Recovery Manager Objects relationship .................................................................................. 15
Configuring data replication ........................................................................................................ 16
Optimizing performance ..................................................................................................................... 20
ESX SAN load balancing and HP StorageWorks EVA ........................................................................ 20
Continuous Access replication tunnels ........................................................................................... 24
Monitoring EVA activity ............................................................................................................... 25
Sizing the SAN ISL ......................................................................................................................... 26
Testing ............................................................................................................................................. 26
Performance testing ........................................................................................................................ 28
DR group full copy performance ...................................................................................................... 29
Failover considerations ....................................................................................................................... 31
Failback considerations ...................................................................................................................... 33
Best practices and caveats .................................................................................................................. 34
ESX server and Site Recovery Manager administration ....................................................................... 34
Storage administration .................................................................................................................... 35
Implementation caveats ................................................................................................................... 35
Conclusion ........................................................................................................................................ 36
For more information .......................................................................................................................... 37
Best Practices for the HP EVA Array using
VMware vCenter Site Recovery Manager
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Summary of Contents

Page 1 - Table of contents

Table of contents Introduction ...

Page 2 - Introduction

10 to the Command View server; therefore the Site Recovery Manager server and the HP EVA SRA can be installed either on a physical machine or on a vi

Page 3

11 Figure 3. Protected Site Array Manager configuration Figure 4. Recovery Side Array Manager configuration

Page 4 - Solution Scope

12 The most common deployment scenario is to have a Command View server at Site A or Site B, managing both the protected and the recovery arrays. Fig

Page 5

13 Figure 6. Active/Active Command View placement Installing EVA licenses HP StorageWorks Continuous Access EVA is needed to create replication pa

Page 6 - Configuration details

14 Figure 7. EVA Licensing in Command View and SSSU

Page 7 - Figure 2. Zoning example

15 Site Recovery Manager Objects relationship Site Recovery Manager introduces three management objects to handle the various elements of the configu

Page 8 - RAID-level penalties

16 VMs in serial order because these VMs generally have dependencies between each other, and because we want the most predictability. The medium and

Page 9 - SPARING

17 Figure 9. Site Recovery Manager datastore groups Two factors determine what causes LUNs and datastores to be grouped together and not distinctl

Page 10

18 If virtual machines that have no relationship are consolidated on a single volume, those virtual machines will have to failover together. With cer

Page 11

19 Figure 10. Symmetric protection groups Alternatively, Site Recovery Manager also allows asymmetric or one-to-many datastore group to DR group r

Page 12

2 Introduction VMware deployments are increasingly being used for mission-critical applications. In response to this trend, VMware delivered VMware v

Page 13 - Virtualization Adapter

20 Figure 11. Asymmetric datastore group configuration Optimizing performance ESX SAN load balancing and HP StorageWorks EVA The EVA 4x, 6x, and 8

Page 14

21 Figure 12. ESX multipathing default configuration The default ESX 3.5 multipath configuration may result in imbalanced SAN and EVA controller l

Page 15

22 Figure 13. Optimized ESX multipathing configuration with HP StorageWorks EVA Implicit LUN transition To optimize the host data paths and reduce

Page 16

23 When using Continuous Access EVA in a VMware ESX environment, HP recommends setting a preferred controller to virtual disks configured in a DR gro

Page 17

24 Continuous Access replication tunnels Replicated EVA Vdisks (copy sets) are grouped in DR groups. When a DR group is created, a relationship is es

Page 18

25 For best performance of remote replication, the average workload (reads and writes) should be equal on both controllers and on both fabrics and IS

Page 19

26 Sizing the SAN ISL The location of the remote site often determines the ISL technologies that meet your distance and performance requirements. The

Page 20 - Optimizing performance

27 Protection Group 2  Microsoft SQL Server 2008 plus IIS  3 Protected Virtual Machines: SQL Server 2008, IIS and a Windows 2008 application clie

Page 21

28 In our environment, MS Exchange 2007 and Linux virtual machines run at Site A and replicate to Site B. MS SQL Server 2008, IIS and the file server

Page 22

29 In previous testing we established that VMFS and Raw Device Mapping perform equally well when subjected to an Exchange 2007 workload. In this conf

Page 23

3 HP StorageWorks Continuous Access EVA Continuous Access EVA is a feature of the Enterprise Virtual Array (EVA) that allows data replication betwee

Page 24

30 Figure 18. Full copy using a single DR group Figure 19. Full copy using two DR Groups As shown in Table 4, spreading the application data

Page 25 - Figure 16. Command output

31 Failover considerations Failover occurs when a Site Recovery Manager recovery plan is executed, and the Site Recovery Manager recovery plan is con

Page 26 - Testing

32 The impact of test failovers that include application recovery can be mitigated with adequate disk array sizing. These additional IOPS must be fac

Page 27

33 Failback considerations Failback is the process of setting the replication environment back to its original state at the protected site prior to f

Page 28 - Performance testing

34 Best practices and caveats This section includes recommendations for customers who plan to deploy VMware vCenter Site Recovery Manager, using HP S

Page 29

35 Storage administration  EVA disk group layout: To optimize performance and provide fault tolerance, place application databases files, transacti

Page 30

36 Conclusion The test results and related information contained in this paper clearly illustrate how to properly plan for and successfully deploy a

Page 31 - Failover considerations

37 For more information HP solutions and white papers HP StorageWorks SAN Design Reference Guide http://h20000.www2.hp.com/bc/docs/support/SupportM

Page 32

Technology for better business outcomes © Copyright 2009 Hewlett-Packard Development Company, L.P. The information contained herein is subject to cha

Page 33 - Failback considerations

4 Solution Scope Building an effective disaster tolerant solution can often be a very complex and time consuming task. Furthermore most disaster tol

Page 34 - Best practices and caveats

5 Figure 1. Configuration diagram In this configuration, the VMware ESX servers can be clustered so that failures of a single ESX host only requir

Page 35 - Implementation caveats

6 Software and hardware configuration The following software and hardware components are used in this case study. Software  VMware ESX server 3.5

Page 36 - Conclusion

7 Figure 2. Zoning example SAN switch settings for Continuous Access We used the following fabric Brocade Switch settings, which are based on rule

Page 37 - For more information

8 To determine the number of spindles required for performance, the following simple formula can be used: Number of drives needed = (Total IOPs * RAI

Page 38

9 For example, a disk group configuration using 300 GB drives, single sparing, and Vraid 5 for a total estimated VM disk space of 8 TB breaks down as

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