How to synchronize the EMC SRDF devices using "symrdf establish"
Article ID: 100037816
Updated On:
Description
Description
This document attempts to explain the steps required to synchronize the R1 and R2 device content using the "symrdf establish" operation.
In this instance, the configuration consists of "4" EMC SRDF "R1" devices presented to production server "Dopey" from EMC Symmetrix id (SID) "822". An additional "4" EMC SRDF "R2" devices have been presented to DR server "Bashful" from EMC Symmetrix ID (SID) "414".
Figure 1.0
Note: The R1 (source) devices from server Dopey are to be synchronized (replicated) to the R2 (target) devices presented to server Bashful.
Steps:
1.] Establish the EMC DeviceGroup name using "symdg list"
Dopey # 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 TGTs
DopeyDg RDF1 Yes 000290300822 4 0 0 0 0
2.] Determine the current SRDF replicated state using "symrdf -sid
Dopey # symrdf -sid 822 list pd
Symmetrix ID: 000290300822
Local Device View
----------------------------------------------------------------------------
STATUS MODES RDF S T A T E S
Sym RDF --------- ----- R1 Inv R2 Inv ----------------------
Dev RDev Typ:G SA RA LNK MDAT Tracks Tracks Dev RDev Pair
---- ---- -------- --------- ----- ------- ------- --- ---- -------------
008C 0072 R1:11 RW RW NR S..1 0 32250 RW WD Suspended
008D 0073 R1:11 RW RW NR S..1 0 32250 RW WD Suspended
008E 0074 R1:11 RW RW NR S..1 0 32250 RW WD Suspended
008F 0075 R1:11 RW RW NR S..1 0 32250 RW WD Suspended
Total -------- --------
Track(s) 0 129000
MB(s) 0.0 8062.5
Legend for MODES:
M(ode of Operation): A = Async, S = Sync, E = Semi-sync, C = Adaptive Copy
D(omino) : X = Enabled, . = Disabled
A(daptive Copy) : D = Disk Mode, W = WP Mode, . = ACp off
(Mirror) T(ype) : 1 = R1, 2 = R2
Note: In this instance, the SRDF replication state is in a "Suspended" state.
3.] Synchronize the SRDF R1 and corresponding R2 devices using "symrdf -g
This operation includes establishing and copying the data from the source side to the target side.
Both the establish and restore operations can be done fully (entire copy) or incrementally (only changed tracks are synchronized). A "full" establish is essential when configuring the SRDF configuration for the first time.
By default, if the -full option is not specified, an incremental establish or restore is attempted.
Dopey # symrdf -g DopeyDg -full establish
Execute an RDF 'Full Establish' operation for device group 'DopeyDg' (y/[n]) ? y
An RDF 'Full Establish' operation execution is in progress for device group 'DopeyDg'. Please wait...
Suspend RDF link(s).......................................Done.
Mark target (R2) devices for full copy from source (R1)...Started.
Devices: 008C-008F in (0822,011)......................... Marked.
Mark target (R2) devices for full copy from source (R1)...Done.
Merge device track tables between source and target.......Started.
Devices: 008C-008F in (0822,011)......................... Merged.
Merge device track tables between source and target.......Done.
Resume RDF link(s)........................................Started.
Resume RDF link(s)........................................Done.
The RDF 'Full Establish' operation successfully initiated for device group 'DopeyDg'.
Note: It is not possible to perform an establish or restore if the remote pair state is not split or suspended.
4.] Validate that the synchronization process is in effect.
Dopey # symrdf -g DopeyDg query
Device Group (DG) Name : DopeyDg
DG's Type : RDF1
DG's Symmetrix ID : 000290300822 (Microcode Version: 5773)
Remote Symmetrix ID : 000290301414 (Microcode Version: 5773)
RDF (RA) Group Number : 11 (0A)
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
-------------------------------- -- ------------------------ ----- ------------
DEV08C 008C RW 0 32250 RW 0072 WD 0 0 S.. SyncInProg
DEV08D 008D RW 0 29976 RW 0073 WD 0 0 S.. SyncInProg
DEV08E 008E RW 0 32250 RW 0074 WD 0 0 S.. SyncInProg
DEV08F 008F RW 0 32250 RW 0075 WD 0 0 S.. SyncInProg
Total -------- -------- -------- --------
Track(s) 0 126726 0 0
MB(s) 0.0 7920.4 0.0 0.0
Legend for MODES:
M(ode of Operation): A = Async, S = Sync, E = Semi-sync, C = Adaptive Copy
D(omino) : X = Enabled, . = Disabled
A(daptive Copy) : D = Disk Mode, W = WP Mode, . = ACp off
or
Dopey # symrdf -sid 822 list pd
Symmetrix ID: 000290300822
Local Device View
----------------------------------------------------------------------------
STATUS MODES RDF S T A T E S
Sym RDF --------- ----- R1 Inv R2 Inv ----------------------
Dev RDev Typ:G SA RA LNK MDAT Tracks Tracks Dev RDev Pair
---- ---- -------- --------- ----- ------- ------- --- ---- -------------
008C 0072 R1:11 RW RW RW S..1 0 14069 RW WD SyncInProg
008D 0073 R1:11 RW RW RW S..1 0 8370 RW WD SyncInProg
008E 0074 R1:11 RW RW RW S..1 0 22774 RW WD SyncInProg
008F 0075 R1:11 RW RW RW S..1 0 20277 RW WD SyncInProg
Total -------- --------
Track(s) 0 65490
MB(s) 0.0 4093.1
Legend for MODES:
M(ode of Operation): A = Async, S = Sync, E = Semi-sync, C = Adaptive Copy
D(omino) : X = Enabled, . = Disabled
A(daptive Copy) : D = Disk Mode, W = WP Mode, . = ACp off
(Mirror) T(ype) : 1 = R1, 2 = R2
5.] Confirm that the synchronization process is complete.
Dopey # symrdf -g DopeyDg query
Device Group (DG) Name : DopeyDg
DG's Type : RDF1
DG's Symmetrix ID : 000290300822 (Microcode Version: 5773)
Remote Symmetrix ID : 000290301414 (Microcode Version: 5773)
RDF (RA) Group Number : 11 (0A)
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
-------------------------------- -- ------------------------ ----- ------------
DEV08C 008C RW 0 0 RW 0072 WD 0 0 S.. Synchronized
DEV08D 008D RW 0 0 RW 0073 WD 0 0 S.. Synchronized
DEV08E 008E RW 0 0 RW 0074 WD 0 0 S.. Synchronized
DEV08F 008F RW 0 0 RW 0075 WD 0 0 S.. Synchronized
Total -------- -------- -------- --------
Track(s) 0 0 0 0
MB(s) 0.0 0.0 0.0 0.0
Legend for MODES:
M(ode of Operation): A = Async, S = Sync, E = Semi-sync, C = Adaptive Copy
D(omino) : X = Enabled, . = Disabled
A(daptive Copy) : D = Disk Mode, W = WP Mode, . = ACp off
or
Dopey # symrdf -sid 822 list pd
Symmetrix ID: 000290300822
Local Device View
----------------------------------------------------------------------------
STATUS MODES RDF S T A T E S
Sym RDF --------- ----- R1 Inv R2 Inv ----------------------
Dev RDev Typ:G SA RA LNK MDAT Tracks Tracks Dev RDev Pair
---- ---- -------- --------- ----- ------- ------- --- ---- -------------
008C 0072 R1:11 RW RW RW S..1 0 0 RW WD Synchronized
008D 0073 R1:11 RW RW RW S..1 0 0 RW WD Synchronized
008E 0074 R1:11 RW RW RW S..1 0 0 RW WD Synchronized
008F 0075 R1:11 RW RW RW S..1 0 0 RW WD Synchronized
Total -------- --------
Track(s) 0 0
MB(s) 0.0 0.0
Legend for MODES:
M(ode of Operation): A = Async, S = Sync, E = Semi-sync, C = Adaptive Copy
D(omino) : X = Enabled, . = Disabled
A(daptive Copy) : D = Disk Mode, W = WP Mode, . = ACp off
(Mirror) T(ype) : 1 = R1, 2 = R2
Process complete.
Issue/Introduction
