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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.........................................................