The following is performed on the primary 3PAR, i.e. the source

Log into the primary 3PAR and show the status of remote copy group myserver03_test

 my3par01 cli% showrcopy groups myserver03_test
 
 Remote Copy System Information
 Status: Started, Normal
 
 Group Information
 
 Name                Target         Status   Role       Mode     Options
 myserver03_test my3par02 Started  Primary    Sync
   LocalVV                     ID   RemoteVV                    ID   SyncStatus    LastSyncTime
   myserver03_rc_test_10_Y 1512 myserver03_rc_test_10_Y 1628 Synced        NA
   myserver03_rc_test_11_Y 1513 myserver03_rc_test_11_Y 1629 Synced        NA

The remote copy group is currently in sync. To failover we need to stop the remote copy group

 my3par01 cli% stoprcopygroup myserver03_test
 Stopping group myserver03_test. If volumes in the group are still synchronizing,
 then their snapshots on the secondary side may get promoted.
 Do you wish to continue?
 select q=quit y=yes n=no: y
 
 my3par01 cli% showrcopy groups myserver03_test
 
 Remote Copy System Information
 Status: Started, Normal
 
 Group Information

 Name                Target         Status   Role       Mode     Options
 myserver03_test my3par02 Stopped  Primary    Sync
   LocalVV                     ID   RemoteVV                    ID   SyncStatus    LastSyncTime
   myserver03_rc_test_10_Y 1512 myserver03_rc_test_10_Y 1628 Stopped       2016-11-24 13:21:17 GMT
   myserver03_rc_test_11_Y 1513 myserver03_rc_test_11_Y 1629 Stopped       2016-11-24 13:21:17 GMT

Now perform the following on the secondary 3PAR, i.e. the target

Log into the secondary 3PAR and run the showrcopy command to find the target remote copy name. This will be same as on the primary but with a suffix, in our example myserver03_test.r50751.

Now you need to perform the failover

 my3par02 cli% setrcopygroup failover -nostart myserver03_test.r50751
 This command will cause all indicated secondary groups to become primary thereby allowing changes to be made to all VVs in the group.
 Are you sure that you wish to perform this action?
 select q=quit y=yes n=no: y
 setrcopygroup for failover -nostart myserver03_test.r50751
 failover started with tasks: 4912
 my3par02 cli% showtask 4912
 No tasks.

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The showtasks commands shows the failover has completed. The remote LUNs will now be in a read/write state so can be presenetd to the DR server

 my3par02 cli% createvlun myserver03_rc_test_11_Y 11 myserver03_DR
 my3par02 cli%
 my3par02 cli% showvlun -host myserver03_DR
 Active VLUNs
 Lun VVName                      HostName       -Host_WWN/iSCSI_Name-  Port Type Status  ID
  11 myserver03_rc_test_11_Y myserver03_DR 10000090FAD76A78      2:1:1 host active 258
  11 myserver03_rc_test_11_Y myserver03_DR 10000090FAD76A79      2:1:2 host active 258
  11 myserver03_rc_test_11_Y myserver03_DR 10000090FAD76A78      3:1:1 host active 258
  11 myserver03_rc_test_11_Y myserver03_DR 10000090FAD76A79      3:1:2 host active 258
 ------------------------------------------------------------------------------------------
   4 total
 
 VLUN Templates
 Lun VVName                      HostName       -Host_WWN/iSCSI_Name- Port Type
  11 myserver03_rc_test_11_Y myserver03_DR ----------------       --- host
 ------------------------------------------------------------------------------
   1 total

The LUN can be unpresented again using the following command

 my3par02 cli%
 my3par02 cli% removevlun myserver03_rc_test_11_Y 11 myserver03_DR
 Issuing removevlun myserver03_rc_test_11_Y 11 myserver03_DR
 select q=quit y=yes n=no: y

Lun status can be displayed as follows:

 my3par02 cli% showvv -rcopy -rcopygroup  myserver03_test.r50751
                                                                         ---Rsvd(MB)--- -(MB)-
   Id Name                        Prov Type CopyOf BsId Rd -Detailed_State-  Adm  Snp  Usr  VSize RcopyStatus RcopyGroup
 1628 myserver03_rc_test_10_Y tpvv base ---    1628 RW normal            512 1024 2048  10240 secondary   myserver03_test.r50751
 1629 myserver03_rc_test_11_Y tpvv base ---    1629 RW normal            512 1024 2048  10240 secondary   myserver03_test.r50751
 ---------------------------------------------------------------------------------------------------------------------------------------
    2 total                                                                 1024 2048 4096  20480