Administrator Guide

Table of contents
3 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
Table of contents
Revisions............................................................................................................................................................................. 2
Acknowledgments ............................................................................................................................................................... 2
Table of contents ................................................................................................................................................................ 3
Executive summary ............................................................................................................................................................. 6
1 Introduction to synchronous replication ........................................................................................................................ 7
1.1 Features of SC Series synchronous replication ................................................................................................. 7
1.2 Synchronous replication requirements ............................................................................................................... 7
2 Data replication primer ................................................................................................................................................. 9
2.1 Replication methods ........................................................................................................................................... 9
3 Synchronous replication features ............................................................................................................................... 13
3.1 Modes of operation ........................................................................................................................................... 13
3.2 Minimal recopy .................................................................................................................................................. 14
3.3 Asynchronous replication capabilities .............................................................................................................. 15
3.4 Multiple replication topologies .......................................................................................................................... 16
3.5 Live Volume ...................................................................................................................................................... 17
3.6 Dell Storage Manager recommendations ......................................................................................................... 18
3.7 Dell Storage Manager DR recovery.................................................................................................................. 19
3.8 Support for VMware vSphere Site Recovery Manager .................................................................................... 19
4 Synchronous replication use cases ............................................................................................................................ 20
4.1 Overview ........................................................................................................................................................... 20
4.2 High consistency............................................................................................................................................... 20
4.3 High availability ................................................................................................................................................. 22
4.4 Remote database replicas ................................................................................................................................ 25
4.5 Disaster recovery .............................................................................................................................................. 26
5 Live Volume overview ................................................................................................................................................ 34
5.1 Reference architecture ..................................................................................................................................... 34
5.2 Proxy data access ............................................................................................................................................ 36
5.3 Live Volume ALUA............................................................................................................................................ 37
5.4 Live Volume connectivity requirements ............................................................................................................ 40
5.5 Replication and Live Volume attributes ............................................................................................................ 42
6 Data Progression and Live Volume ............................................................................................................................ 46
6.1 Primary and secondary Live Volume ................................................................................................................ 46
7 Live Volume and MPIO .............................................................................................................................................. 47
7.1 MPIO policies for Live Volume ......................................................................................................................... 47