Description

This document attempts to explain the steps required to determine the current state for EMC SRDF devices.

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 replicated to the R2 (target) devices presented to server Bashful.

In this instance, the EMC DeviceGroup name is "DopeyDg" as confirmed by "symdg list" shown below:


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

To determine the current SRDF replicated state, use either SYMCLI commands "symrdf -sid list pd" or "symrdf -g query".

Note: Both outputs confirm that the SRDF devices are "synchronized" in this instance.

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