Administrator Guide

Table Of Contents
Convert a Failback Replica Set to an Inbound Replica Set........................................................................................ 277
Make a Temporary Volume Available on the Secondary Group....................................................................................... 278
Replicate a Recovery Volume to the Primary Group....................................................................................................... 278
Where to Go from Here............................................................................................................................................279
Promote an Inbound Replica Set to a Recovery Volume................................................................................................. 279
Recovery Volume Options........................................................................................................................................280
Recovery Volume Restrictions..................................................................................................................................280
How to Handle a Failed Operation..................................................................................................................................280
Fail Back to the Primary Group....................................................................................................................................... 281
Volume Failover and Failback.......................................................................................................................................... 281
Recover Data from a Replica .........................................................................................................................................282
About Data Recovery from a Replica........................................................................................................................282
About Permanently Promoting a Replica Set to a Volume........................................................................................ 282
Permanently Promote a Replica Set to a Volume......................................................................................................283
About Failing Over and Failing Back a Volume.......................................................................................................... 284
About NAS Disaster Recovery........................................................................................................................................287
About NAS Replication............................................................................................................................................. 287
Recover from an Oine or Unavailable NAS............................................................................................................ 300
About Cloning Volumes.................................................................................................................................................. 304
Clone a Volume........................................................................................................................................................ 304
About Cloning an Inbound Replica............................................................................................................................304
Clone an Inbound Replica.........................................................................................................................................305
18 About Synchronous Replication................................................................................. 306
How Synchronous Replication Works.............................................................................................................................306
Compare SyncRep and Traditional Replication............................................................................................................... 306
How Synchronous Replication Protects Volume Availability in Dierent Scenarios......................................................... 308
Normal Synchronous Replication Operation............................................................................................................. 308
SyncAlternate Volume Unavailable........................................................................................................................... 309
SyncActive Volume Unavailable.................................................................................................................................310
Requirements for Using Synchronous Replication............................................................................................................311
Synchronous Replication States.......................................................................................................................................311
About System Snapshots and SyncRep.......................................................................................................................... 312
Protected System Snapshots....................................................................................................................................312
Failback System Snapshots.......................................................................................................................................312
About Synchronous Replication and Snapshots.............................................................................................................. 312
Automatic Snapshot Creation................................................................................................................................... 313
About Synchronous Replication Switches and Failovers..................................................................................................313
SyncRep SwitchesSyncRep Failovers....................................................................................................................... 313
About Synchronous Replication Volume Collections........................................................................................................314
About Using Thin Clones and Templates with Synchronous Replication..........................................................................315
Thin Clones...............................................................................................................................................................315
Templates................................................................................................................................................................. 315
Congure Synchronous Replication (SyncRep) on a Volume...........................................................................................316
Disable Synchronous Replication (SyncRep) for a Volume.............................................................................................. 316
Monitor Synchronous Replication (SyncRep) Volumes....................................................................................................316
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