Technical Report

SnapMirror Configuration and Best Practices Guide for Clustered Data ONTAP Amit Prakash Sawant, NetApp December 2013 | TR-4015

SnapMirror Configuration and Best Practices

This document describes information and best practices related to configuring replication in

NetApp clustered Data ONTAP

.

2 SnapMirror Conf iguration and Best Practices Guide f or clustered Data ONTAP 8.2 Technical Report

TABLE OF CONTENTS

Introduction ......................................................................................................................................6

1.1 Purpose and Intended Audience...................................................................................................................................6

1.2 SnapMirror Uses and Benefits.......................................................................................................................................6

2 Overview ................................................................................................................................... 11

2.1 SnapMirror Overview ................................................................................................................................................... 11

2.2 Clustered Data ONTAP Overview.............................................................................................................................. 12

3 Network Configuration for Replication Between Different Clusters .......................................... 14

3.1 Intercluster Networking ................................................................................................................................................ 14

3.2 Cluster Peering ............................................................................................................................................................. 16

3.3 Cluster Peer Requirements......................................................................................................................................... 16

3.4 Intercluster Multipathing and Network Redundancy ............................................................................................... 17

3.5 Network Connections for Intercluster SnapMirror ................................................................................................... 20

3.6 Determining Whether to Share or Dedicate Ports for Replication ........................................................................ 22

3.7 Sharing Data Ports for Intercluster Replication........................................................................................................ 23

3.8 Dedicating Intercluster Ports for Intercluster Replication ....................................................................................... 26

3.9 Configuring Cluster Peers ........................................................................................................................................... 30

3.10 Intercluster SnapMirror Throttle.................................................................................................................................. 31

3.11 Firewall Requirements for Intercluster SnapMirror.................................................................................................. 32

4 Storage Virtual Machine Peering ............................................................................................... 32

4.1 Storage Virtual Machine Peer Requirements........................................................................................................... 32

4.2 Configuring Storage Virtual Machine Peers ............................................................................................................. 33

5 SnapMirror Data Protection Relationships ................................................................................ 33

5.1 SnapMirror Data Protection Relationships ............................................................................................................... 36

5.2 Scheduling SnapMirror Updates ................................................................................................................................ 39

5.3 Converting a SnapMirror Relationship to a SnapVault Relationship.................................................................... 39

6 Managing SnapMirror Data Protection Relationships with NetApp OnCommand System Manager .................................................................................................................................... 42

6.1 Creating a SnapMirror Relationship in System Manager ....................................................................................... 42

6.2 Managing SnapMirror Relationships with System Manager.................................................................................. 53

7 SnapMirror Load-Sharing Mirror Relationships......................................................................... 56

7.1 Administering Load-Sharing Mirrors .......................................................................................................................... 56

7.2 Accessing Load-Sharing Mirror Volumes ................................................................................................................. 57

7.3 Load-Sharing Mirrors for Storage Virtual Machine Namespace Root Volumes ................................................. 58

3 SnapMirror Conf iguration and Best Practices Guide f or clustered Data ONTAP 8.2 Technical Report

7.4 Load-Sharing Mirrors for Read-Only Workloads ..................................................................................................... 59

7.5 Failover of Load-Sharing Mirror Relationships ........................................................................................................ 60

8 SnapMirror and Data ONTAP Feature Interaction ...................................................................... 61

8.1 SnapMirror and Snapshot Copies.............................................................................................................................. 61

8.2 SnapMirror and Qtrees ................................................................................................................................................ 61

8.3 SnapMirror and FlexClone .......................................................................................................................................... 62

8.4 SnapMirror and Infinite Volume .................................................................................................................................. 63

8.5 SnapMirror and NetApp Storage Efficiency.............................................................................................................. 65

8.6 SnapMirror and Volume Move .................................................................................................................................... 65

8.7 SnapMirror for Disk Shelf Failure Protection............................................................................................................ 66

8.8 SnapMirror and Volume Autosize .............................................................................................................................. 66

8.9 SnapMirror and Network Data management Protocol............................................................................................ 67

8.10 SnapMirror and Data ONTAP Version Dependencies............................................................................................ 67

9 SnapMirror Sizing Recommendations ....................................................................................... 68

9.1 Concurrent Replication Operations............................................................................................................................ 68

9.2 Recommended Replication Intervals......................................................................................................................... 68

9.3 Network Sizing Requirements .................................................................................................................................... 68

10 Troubleshooting Tips ................................................................................................................ 69

10.1 Troubleshooting Cluster Peer Relationships............................................................................................................ 69

10.2 Troubleshooting Storage Virtual Machine Peer Relationships.............................................................................. 70

10.3 Understanding SnapMirror Relationship Status ...................................................................................................... 71

10.4 Troubleshooting SnapMirror Relationships .............................................................................................................. 72

11 Configuration and Failover for Disaster Recovery .................................................................... 74

11.1 Environment Failover Requirements and Assumptions ......................................................................................... 74

11.2 Best Practices for DR Configurations........................................................................................................................ 75

11.3 Preparing the Destination for Failover.........................................................