SRDF splitting
1. logon to emc server 2. search for the host in question and the device group (in this case host4 device group Adat3) # symdg list D E V I C E G R O U P S Number of Name Type Valid Symmetrix ID Devs GKs BCVs VDEVs host1_data-M RDF1 Yes 000285700131 8 0 0 0 host1_dumps-M RDF1 Yes 000285700131 1 0 0 0 host2_data-M RDF1 Yes 000285700131 9 0 0 0 host2_temp-M RDF1 Yes 000285700131 6 0 0 0 host3_data RDF1 Yes 000285700131 8 0 0 0 host4_Adat3 RDF1 Yes 000290100000 27 0 0 0 (this is the one we want) host4_Bdat3 RDF1 Yes 000290100000 12 0 0 0 3. split the device group # symrdf -g host4_Adat3 split Execute an RDF 'Split' operation for device group 'host4_Adat3' (y/[n]) ? y An RDF 'Split' operation execution is in progress for device group 'host4_Adat3'. Please wait... Suspend RDF link(s).......................................Done. Read/Write Enable device(s) on RA at target (R2)..........Done. The RDF 'Split' operation successfully executed for device group 'host4_Adat3'. 4. confirm the split # symrdf -g host4_Adat3 query Device Group (DG) Name : host4_Adat3 DG's Type : RDF1 DG's Symmetrix ID : 000290100000 Source (R1) View Target (R2) View MODES -------------------------------- ------------------------ ----- ------------ ST LI ST Standard A N A Logical T R1 Inv R2 Inv K T R1 Inv R2 Inv RDF Pair Device Dev E Tracks Tracks S Dev E Tracks Tracks MDA STATE -------------------------------- -- ------------------------ ----- ------------ DEV001 05F8 RW 0 260 NR 06B0 RW 0 0 S.. Split DEV002 0608 RW 0 258 NR 06C0 RW 0 0 S.. Split DEV003 0618 RW 0 262 NR 06D0 RW 0 0 S.. Split DEV004 0628 RW 0 266 NR 06E0 RW 0 0 S.. Split DEV005 0638 RW 0 264 NR 06F0 RW 0 0 S.. Split 5. To reestablish the link # symrdf -g host4_Adat3 establish Execute an RDF 'Incremental Establish' operation for device group 'host4_Adat3' (y/[n]) ? y An RDF 'Incremental Establish' operation execution is in progress for device group 'host4_Adat3'. Please wait... Write Disable device(s) on RA at target (R2)..............Done. Suspend RDF link(s).......................................Done. Resume RDF link(s)........................................Started. Merge device track tables between source and target.......Started. Devices: 0778-078F ...................................... Merged. Devices: 0758-0777 ...................................... Merged. Devices: 0738-0757 ...................................... Merged. Devices: 0718-0737 ...................................... Merged. Devices: 06F8-0717 ...................................... Merged. Devices: 06D8-06F7 ...................................... Merged. Devices: 06B8-06D7 ...................................... Merged. Devices: 0698-06B7 ...................................... Merged. Devices: 0678-0697 ...................................... Merged. Devices: 0658-0677 ...................................... Merged. Devices: 0638-0657 ...................................... Merged. Devices: 0618-0637 ...................................... Merged. Devices: 05F8-0617 ...................................... Merged. Merge device track tables between source and target.......Done. Resume RDF link(s)........................................Done. The RDF 'Incremental Establish' operation successfully initiated for device group 'host4_Adat3'.