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Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

Notes, cautions, and warnings
PREFACE
Revision history
SRDF CLI overview
Basic SRDF Control Operations
- Summary
- SRDF basic control operations
Dynamic Operations
SRDF/Asynchronous Operations
SRDF/Metro Operations
SRDF/Metro Smart DR Operations
Consistency Group Operations
Concurrent Operations
- Concurrent operations overview
  - Concurrent operations restrictions
    - Restrictions: both R2 devices in synchronous mode
    - Restrictions: both R2 devices in asynchronous mode
  - Additional documentation for concurrent operations
- Configuring a concurrent SRDF relationship
Cascaded Operations
SRDF/Star Operations
Device Migration Operations
SRDF/Automated Replication
TimeFinder and SRDF operations
- Multi-hop operations
- TimeFinder SnapVX and SRDF
  - TimeFinder SnapVX and Cascaded SRDF
  - TimeFinder SnapVX and Concurrent SRDF
SRDF Automated Recovery Operations

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Remove an SRDF/Metro Smart DR environment

About this task

To remove an SRDF/Metro Smart DR environment, use the symmdr environment -remove command. The end result is a CRDF setup with one mirror that is an SRDF/Metro session and one mirror that is the DR, that is either an SRDF/A session or in adaptive copy disk mode.

When removing a SRDF/Metro Smart DR environment, users can choose to keep the DR that originates from either the MetroR1 side or the MetroR2 side.

If the SRDF/Metro state is ActiveActive and the DR leg being removed is the MetroR1 to DR, the existence of the other DR leg results in the SRDF/Metro witness to prefer the side with the DR. After completing a Smart DR environment removal, the MetroR2 that was configured for Smart DR is reported as MetroR1.

The successful removal of an SRDF/Metro Smart DR environment results in the following:

the state of the SRDF/Metro session does not change
the state of the SRDF/Metro Smart DR session does not change (unless a -force option is required)
if the DR mode is Asynchronous at the time of issuing the symmdr env -remove command, the devices remain enabled.

Using the -force option is required for removing a SRDF/Metro Smart DR environment when:

the SRDF/Metro state is SyncInProg or ActiveActive, and
the DR state is Synchronized, SyncInProg, or Consistent, and
MetroR2_DR is Suspended and the MetroR1_DR is being removed.

Syntax

symmdr -sid <ArrayID> -name <EnvironmentName>
       -dr_rdfg <RDFGroup>

       environment -remove

Example

Example 1: DR leg remaining on MetroR1

Use the symmdr -sid 048 -name Alaska query command to see details of the Alaska Smart DR environment before its removal. The SRDF/Metro pair is Suspended.

Array ID: 000197900048

Name          : Alaska
Service State : Normal
Capacity      : 1.8 GB
Exempt Devices: No

MetroR1: 000197900048
MetroR2: 000197802041
DR     : 000197801702

       MetroR1               MetroR2          MetroR1 <-> MetroR2
--------------------- --------------------- -----------------------
MetroR1  MetroR2      MetroR1  MetroR2
Invalids Invalids Flg Invalids Invalids Flg Flags              Done
(GB)     (GB)     HA  (GB)     (GB)     HA  LW ES State        (%)
-------- -------- --- -------- -------- --- ----- ------------ ----
     0.0      0.0 -.       0.0      0.0 -.  .. .I Suspended       -

      Metro              DR                              Metro <-> DR
----------------- ----------------- ------------------------------------------------------
Metro    DR       Metro    DR                               Cycle
Invalids Invalids Invalids Invalids Flags              Done Time
(GB)     (GB)     (GB)     (GB)     LM ES State        (%)  (sec) DR Consistent Image Time
-------- -------- -------- -------- ----- ------------ ---- ----- ------------------------
     0.0      0.0      0.0      0.0 .A .A Consistent      -    15 Thu Apr 23 15:33:30 2020

Legend:
  Metro Flags:
    (H)ost Connectivity: . = Normal, X = Degraded
    (A)rray Health     : . = Normal, X = Degraded
  MetroR1 <-> MetroR2 Flags:
    (L)ink State       : . = Online, X = Offline
    (W)itness State    : . = Available, D = Degraded, X = Failed
    (E)xempt Devices   : . = No Exempt Devices, X = Exempt Devices
    (S)ervice State    : H = Active HA, A = Active, I = Inactive, D = Degraded
  Metro <-> DR Flags:
    (L)ink State       : . = Online, X = Offline, 1 = MetroR1_DR Offline, 2 = MetroR2_DR Offline
    (M)ode             : A = Async, D = Adaptive Copy
    (E)xempt Devices   : . = No Exempt Devices, X = Exempt Devices
    (S)ervice State    : H = Active HA, A = Active, I = Inactive, D = Degraded

Array ID: 000197900048

Name          : Alaska
Service State : Normal
Capacity      : 1.8 GB
Exempt Devices: No

MetroR1: 000197900048
MetroR2: 000197802041
DR     : 000197801702

       MetroR1               MetroR2          MetroR1 <-> MetroR2
--------------------- --------------------- -----------------------
MetroR1  MetroR2      MetroR1  MetroR2
Invalids Invalids Flg Invalids Invalids Flg Flags              Done
(GB)     (GB)     HA  (GB)     (GB)     HA  LW ES State        (%)
-------- -------- --- -------- -------- --- ----- ------------ ----
     0.0      0.0 -.       0.0      0.0 -.  .. .I Suspended       -

      Metro              DR                              Metro <-> DR
----------------- ----------------- ------------------------------------------------------
Metro    DR       Metro    DR                               Cycle
Invalids Invalids Invalids Invalids Flags              Done Time
(GB)     (GB)     (GB)     (GB)     LM ES State        (%)  (sec) DR Consistent Image Time
-------- -------- -------- -------- ----- ------------ ---- ----- ------------------------
     0.0      0.0      0.0      0.0 .A .A Consistent      -    15 Thu Apr 23 15:33:30 2020

Legend:
  Metro Flags:
    (H)ost Connectivity: . = Normal, X = Degraded
    (A)rray Health     : . = Normal, X = Degraded
  MetroR1 <-> MetroR2 Flags:
    (L)ink State       : . = Online, X = Offline
    (W)itness State    : . = Available, D = Degraded, X = Failed
    (E)xempt Devices   : . = No Exempt Devices, X = Exempt Devices
    (S)ervice State    : H = Active HA, A = Active, I = Inactive, D = Degraded
  Metro <-> DR Flags:
    (L)ink State       : . = Online, X = Offline, 1 = MetroR1_DR Offline, 2 = MetroR2_DR Offline
    (M)ode             : A = Async, D = Adaptive Copy
    (E)xempt Devices   : . = No Exempt Devices, X = Exempt Devices
    (S)ervice State    : H = Active HA, A = Active, I = Inactive, D = Degraded

Use the symmdr -sid 48 -dr_rdfg 55 -name Alaska -nop env -remove command to remove the Alaska Smart DR environment with the DR leg remaining on MetroR1.

A MetroDR 'Environment Remove' operation is in progress
for 'Alaska'. Please wait...

    Update environment attributes .................................Started.
      MetroR1_ArrayID: 000197900048, Metro_RDFG  : 0099, DR_RDFG     : 0055
      MetroR2_ArrayID: 000197802041, Metro_RDFG  : 0089, DR_RDFG     : 0102
      DR_ArrayID     : 000197801702, MetroR1_RDFG: 0077, MetroR2_RDFG: 0130
      DR Mode        : Asynchronous, MetroDR Devs: 2
    Update environment attributes .................................Done.
    Stop Data Repl (Host Access [MetroR1:Enable,DR:Disable]).......Started.
    Stop Data Repl (Host Access [MetroR1:Enable,DR:Disable]).......Done.
    Clear HA Data Repl (Metro,DR)..................................Started.
    Clear HA Data Repl (Metro,DR)..................................Not Needed.
    Delete RDF Pair(s) (MetroR1,DR)................................Started.
    Delete RDF Pair(s) (MetroR1,DR)................................Done.
    Clear environment attributes ..................................Started.
    Clear environment attributes ..................................Done.

The MetroDR 'Environment Remove' operation successfully executed
for 'Alaska'.

After removing the Alaska Smart DR environment, use the symrdf -sid 048 query -rdfg 99 command to see details of the SRDF/Metro pair. The SRDF/Metro pair state remained Suspended after the removal.

Symmetrix ID                 : 000197900048    (Microcode Version: 5978)
Remote Symmetrix ID          : 000197802041    (Microcode Version: 5978)
RDF (RA) Group Number        :  99 (62)

        Source (R1) View                 Target (R2) View     FLAGS
---------------------------------    ------------------------ ----- ------------
               ST                 LI       ST
Standard        A                  N        A
Logical  Sym    T R1 Inv  R2 Inv   K Sym    T R1 Inv  R2 Inv        RDF Pair
Device   Dev    E Tracks  Tracks   S Dev    E Tracks  Tracks  MCES  STATE
--------------------------------- -- ------------------------ ----- ------------
N/A      00F9C RW       0       0 NR 00C58 WD       0       0 TX.E  Suspended
N/A      00F9D RW       0       0 NR 00C59 WD       0       0 TX.E  Suspended

Total             ------- -------             ------- -------
  Track(s)              0       0                   0       0
  MB(s)               0.0     0.0                 0.0     0.0

Legend for FLAGS:

 (M)ode of Operation : A = Async, S = Sync, E = Semi-sync, D = Adaptive Copy Disk Mode
                     : W = Adaptive Copy WP Mode, M = Mixed, T = Active
 (C)onsistency State : X = Enabled, . = Disabled, M = Mixed, - = N/A
 (E)xempt            : X = Enabled, . = Disabled, M = Mixed, - = N/A
 R1/R2 Device (S)ize : E = R1 EQ R2, 1 = R1 GT R2, 2 = R2 GT R1, - = N/A

Use the symrdf -sid 041 query -rdfg 102 command to see details of the remaining DR pair.

Symmetrix ID                 : 000197802041    (Microcode Version: 5978)
Remote Symmetrix ID          : 000197801702    (Microcode Version: 5978)
RDF (RA) Group Number        : 102 (65)

        Source (R1) View                 Target (R2) View     FLAGS
---------------------------------    ------------------------ ----- ------------
               ST                 LI       ST
Standard        A                  N        A
Logical  Sym    T R1 Inv  R2 Inv   K Sym    T R1 Inv  R2 Inv        RDF Pair
Device   Dev    E Tracks  Tracks   S Dev    E Tracks  Tracks  MCES  STATE
--------------------------------- -- ------------------------ ----- ------------
N/A      00C58 RW       0       0 NR 07FF2 WD       0       0 AX.E  Suspended
N/A      00C59 RW       0       0 NR 07FF3 WD       0       0 AX.E  Suspended

Total             ------- -------             ------- -------
  Track(s)              0       0                   0       0
  MB(s)               0.0     0.0                 0.0     0.0

Legend for FLAGS:

 (M)ode of Operation : A = Async, S = Sync, E = Semi-sync, D = Adaptive Copy Disk Mode
                     : W = Adaptive Copy WP Mode, M = Mixed, T = Active
 (C)onsistency State : X = Enabled, . = Disabled, M = Mixed, - = N/A
 (E)xempt            : X = Enabled, . = Disabled, M = Mixed, - = N/A
 R1/R2 Device (S)ize : E = R1 EQ R2, 1 = R1 GT R2, 2 = R2 GT R1, - = N/A

Example 2: DR leg remaining on MetroR1 when SRDF/Metro state is ActiveActive

Use the symmdr -sid 048 -name Alaska query command to see details of the Alaska Smart DR environment before its removal. The SRDF/Metro pair is ActiveActive.

Array ID: 000197900048

Name          : Alaska
Service State : Normal
Capacity      : 1.8 GB
Exempt Devices: No

MetroR1: 000197900048
MetroR2: 000197802041
DR     : 000197801702

       MetroR1               MetroR2          MetroR1 <-> MetroR2
--------------------- --------------------- -----------------------
MetroR1  MetroR2      MetroR1  MetroR2
Invalids Invalids Flg Invalids Invalids Flg Flags              Done
(GB)     (GB)     HA  (GB)     (GB)     HA  LW ES State        (%)
-------- -------- --- -------- -------- --- ----- ------------ ----
     0.0      0.0 ..       0.0      0.0 ..  .. .H ActiveActive    -

      Metro              DR                              Metro <-> DR
----------------- ----------------- ------------------------------------------------------
Metro    DR       Metro    DR                               Cycle
Invalids Invalids Invalids Invalids Flags              Done Time
(GB)     (GB)     (GB)     (GB)     LM ES State        (%)  (sec) DR Consistent Image Time
-------- -------- -------- -------- ----- ------------ ---- ----- ------------------------
     0.0      0.0      0.0      0.0 .A .A Consistent      -    15 Thu Apr 23 16:11:44 2020

Legend:
  Metro Flags:
    (H)ost Connectivity: . = Normal, X = Degraded
    (A)rray Health     : . = Normal, X = Degraded
  MetroR1 <-> MetroR2 Flags:
    (L)ink State       : . = Online, X = Offline
    (W)itness State    : . = Available, D = Degraded, X = Failed
    (E)xempt Devices   : . = No Exempt Devices, X = Exempt Devices
    (S)ervice State    : H = Active HA, A = Active, I = Inactive, D = Degraded
  Metro <-> DR Flags:
    (L)ink State       : . = Online, X = Offline, 1 = MetroR1_DR Offline, 2 = MetroR2_DR Offline
    (M)ode             : A = Async, D = Adaptive Copy
    (E)xempt Devices   : . = No Exempt Devices, X = Exempt Devices
    (S)ervice State    : H = Active HA, A = Active, I = Inactive, D = Degraded

Use the symmdr -sid 48 -dr_rdfg 55 -name Alaska -nop env -remove command to remove the Alaska Smart DR environment.

A MetroDR 'Environment Remove' operation is in progress
for 'Alaska'. Please wait...

    Update environment attributes .................................Started.
      MetroR1_ArrayID: 000197900048, Metro_RDFG  : 0099, DR_RDFG     : 0055
      MetroR2_ArrayID: 000197802041, Metro_RDFG  : 0089, DR_RDFG     : 0102
      DR_ArrayID     : 000197801702, MetroR1_RDFG: 0077, MetroR2_RDFG: 0130
      DR Mode        : Asynchronous, MetroDR Devs: 2
    Update environment attributes .................................Done.
    Stop Data Repl (Host Access [MetroR1:Enable,DR:Disable]).......Started.
    Stop Data Repl (Host Access [MetroR1:Enable,DR:Disable]).......Done.
    Clear HA Data Repl (Metro,DR)..................................Started.
    Clear HA Data Repl (Metro,DR)..................................Done.
    Delete RDF Pair(s) (MetroR1,DR)................................Started.
    Delete RDF Pair(s) (MetroR1,DR)................................Done.
    Clear environment attributes ..................................Started.
    Clear environment attributes ..................................Done.

The MetroDR 'Environment Remove' operation successfully executed
for 'Alaska'.

As the SRDF/Metro state is ActiveActive and the DR leg being removed is the MetroR1 to DR, the witness decided that it should indicate the side with the active DR as the MetroR1.

After removing the Alaska Smart DR environment, use the symrdf -sid 048 query -rdfg 99 command from the MetroR1 array to see details of the SRDF/Metro pair.

Symmetrix ID                 : 000197900048    (Microcode Version: 5978)
Remote Symmetrix ID          : 000197802041    (Microcode Version: 5978)
RDF (RA) Group Number        :  99 (62)

        Target (R2) View                 Source (R1) View     FLAGS
---------------------------------    ------------------------ ----- ------------
               ST                 LI       ST
Standard        A                  N        A
Logical  Sym    T R1 Inv  R2 Inv   K Sym    T R1 Inv  R2 Inv        RDF Pair
Device   Dev    E Tracks  Tracks   S Dev    E Tracks  Tracks  MCES  STATE
--------------------------------- -- ------------------------ ----- ------------
N/A      00F9C RW       0       0 RW 00C58 RW       0       0 TX.E  ActiveActive
N/A      00F9D RW       0       0 RW 00C59 RW       0       0 TX.E  ActiveActive

Total             ------- -------             ------- -------
  Track(s)              0       0                   0       0
  MB(s)               0.0     0.0                 0.0     0.0

Legend for FLAGS:

 (M)ode of Operation : A = Async, S = Sync, E = Semi-sync, D = Adaptive Copy Disk Mode
                     : W = Adaptive Copy WP Mode, M = Mixed, T = Active
 (C)onsistency State : X = Enabled, . = Disabled, M = Mixed, - = N/A
 (E)xempt            : X = Enabled, . = Disabled, M = Mixed, - = N/A
 R1/R2 Device (S)ize : E = R1 EQ R2, 1 = R1 GT R2, 2 = R2 GT R1, - = N/A

Use the symrdf -sid 041 query -rdfg 89 command from the MetroR2 array to see details of the SRDF/Metro pair.

Symmetrix ID                 : 000197802041    (Microcode Version: 5978)
Remote Symmetrix ID          : 000197900048    (Microcode Version: 5978)
RDF (RA) Group Number        :  89 (58)

        Source (R1) View                 Target (R2) View     FLAGS
---------------------------------    ------------------------ ----- ------------
               ST                 LI       ST
Standard        A                  N        A
Logical  Sym    T R1 Inv  R2 Inv   K Sym    T R1 Inv  R2 Inv        RDF Pair
Device   Dev    E Tracks  Tracks   S Dev    E Tracks  Tracks  MCES  STATE
--------------------------------- -- ------------------------ ----- ------------
N/A      00C58 RW       0       0 RW 00F9C RW       0       0 TX.E  ActiveActive
N/A      00C59 RW       0       0 RW 00F9D RW       0       0 TX.E  ActiveActive

Total             ------- -------             ------- -------
  Track(s)              0       0                   0       0
  MB(s)               0.0     0.0                 0.0     0.0

Legend for FLAGS:

 (M)ode of Operation : A = Async, S = Sync, E = Semi-sync, D = Adaptive Copy Disk Mode
                     : W = Adaptive Copy WP Mode, M = Mixed, T = Active
 (C)onsistency State : X = Enabled, . = Disabled, M = Mixed, - = N/A
 (E)xempt            : X = Enabled, . = Disabled, M = Mixed, - = N/A
 R1/R2 Device (S)ize : E = R1 EQ R2, 1 = R1 GT R2, 2 = R2 GT R1, - = N/A

Use the symrdf -sid 041 query -rdfg 102 command to see details of the remaining DR pair. After the removal, the opposite side of the SRDF/Metro leg that used to be MetroR2 is now reported as MetroR1.

Symmetrix ID                 : 000197802041    (Microcode Version: 5978)
Remote Symmetrix ID          : 000197801702    (Microcode Version: 5978)
RDF (RA) Group Number        : 102 (65)

        Source (R1) View                 Target (R2) View     FLAGS
---------------------------------    ------------------------ ----- ------------
               ST                 LI       ST
Standard        A                  N        A
Logical  Sym    T R1 Inv  R2 Inv   K Sym    T R1 Inv  R2 Inv        RDF Pair
Device   Dev    E Tracks  Tracks   S Dev    E Tracks  Tracks  MCES  STATE
--------------------------------- -- ------------------------ ----- ------------
N/A      00C58 RW       0       0 RW 07FF2 WD       0       0 AX.E  Consistent
N/A      00C59 RW       0       0 RW 07FF3 WD       0       0 AX.E  Consistent

Total             ------- -------             ------- -------
  Track(s)              0       0                   0       0
  MB(s)               0.0     0.0                 0.0     0.0

Legend for FLAGS:

 (M)ode of Operation : A = Async, S = Sync, E = Semi-sync, D = Adaptive Copy Disk Mode
                     : W = Adaptive Copy WP Mode, M = Mixed, T = Active
 (C)onsistency State : X = Enabled, . = Disabled, M = Mixed, - = N/A
 (E)xempt            : X = Enabled, . = Disabled, M = Mixed, - = N/A
 R1/R2 Device (S)ize : E = R1 EQ R2, 1 = R1 GT R2, 2 = R2 GT R1, - = N/A

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