Administrator Guide

subnets context........................................................................................................................................................... 54
/connectivity/back-end/ .........................................................................................................................................55
/connectivity/front-end/ ........................................................................................................................................ 55
/connectivity/local-com/......................................................................................................................................... 56
Managing and Monitoring back-end network............................................................................................................ 56
Taking a Back-End IT Nexus with High Latency Out of Service..................................................................... 56
Marking a Back-End IT Nexus Isolated due to Unstable Performance.......................................................... 56
LDAP.....................................................................................................................................................................................57
Directory structure......................................................................................................................................................57
Examples (ldapsearch command)............................................................................................................................57
Chapter 9: Consistency Groups................................................................................................... 59
About metro node consistency groups........................................................................................................................ 59
Synchronous consistency groups............................................................................................................................59
Properties of consistency groups..................................................................................................................................62
Visibility.......................................................................................................................................................................... 62
Storage-at-clusters.....................................................................................................................................................63
Detach-rule................................................................................................................................................................... 64
Auto-resume-at-loser.................................................................................................................................................65
Virtual-volumes............................................................................................................................................................ 65
Manage consistency groups........................................................................................................................................... 66
Creating a consistency group...................................................................................................................................66
Adding volumes to a consistency group................................................................................................................ 67
Removing volumes from a consistency group......................................................................................................68
Modifying consistency group properties............................................................................................................... 69
Example of modify: set visibility...............................................................................................................................70
Example of modify: apply a detach rule................................................................................................................. 70
Deleting a consistency group.................................................................................................................................... 71
Displaying consistency group properties................................................................................................................72
Operating a consistency group...................................................................................................................................... 76
Resuming I/O after rollback......................................................................................................................................78
Resuming I/O at the losing cluster..........................................................................................................................79
Setting the read-only attribute................................................................................................................................ 80
Chapter 10: Performance and Monitoring.....................................................................................81
About performance............................................................................................................................................................81
RPO and RTO................................................................................................................................................................81
About performance monitoring.......................................................................................................................................81
Performance monitoring using Unisphere for metro node................................................................................ 83
Performance monitoring using the metro node CLI............................................................................................84
Monitor performance using the CLI..............................................................................................................................84
About file rotation and timestamps.........................................................................................................................84
Procedure overview: create a monitor using the CLI......................................................................................... 84
Creating a monitor...................................................................................................................................................... 85
Adding/deleting monitor sinks................................................................................................................................. 86
Deleting a monitor....................................................................................................................................................... 87
Enabling/disabling/changing polling....................................................................................................................... 89
Enabling/disabling sinks.............................................................................................................................................90
Force an immediate poll..............................................................................................................................................91
Contents
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