Solutions Enabler：當 SRDF/A 正在執行時，Symclone 建立失敗

Summary: 當 R2 裝置作為來源處於一致狀態時，無法執行 symclone 增量建立。

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Symptoms

當 SRDF 裝置設為異位模式時，R2 裝置會處於一致狀態，因此 symclone 建立會失敗，如下所示： 
  
symrdf -g test_dg que 
  
Device Group (DG) Name       : test_dg
DG's Type                    : ANY
DG's Symmetrix ID            : 000xxxxxxxxx    (Microcode Version: 5876)
Remote Symmetrix ID          : 000yyyyyyyyy    (Microcode Version: 5876)
RDF (RA) Group Number        :  57 (38)         
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
--------------------------------- -- ------------------------ ----- ------------
SRC01693  01693 WD      0       0 RW 04C32 RW       0       0 AX.E  Consistent
SRC03AA3 03AA3 WD       0       0 RW 02FCB RW       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
symclone -g test_dg   establish -consistent -tgt 
  
Execute 'Incremental Establish' operation for device group
'test_dg' (y/[n]) ? y 
'Incremental Establish' operation execution is in progress for
device group 'test_dg'. Please wait... 

The request is not allowed for SRDF/A-capable devices in async mode

Cause

當處於非同步模式的 R2 裝置被當作複製來源使用時，symclone 建立命令會失敗
，因為「建立」會執行彼此相隔的「重新建立/啟動」時刻。前置檔永遠也不可能有生效的機會。

但是-precopy 或 -copy 可用來維持 SRDF/A 一致性會話，同時建立複製複本。

Resolution

若要建立一致的複製副本，請分別執行「重新建立/啟動」命令，而非單一建立命令，這兩個動作都以串聯方式組成。

範例如下： 
  
symclone -g "test_dg" recreate -precopy -tgt
symclone -g "test_dg" activate -tgt -consistent

這樣可以有效地取代 symclone 建立。

Affected Products

PowerMax, Solutions Enabler Series, VMAX, VMAX All Flash, VMAX3 Series
Article Properties
Article Number: 000208281
Article Type: Solution
Last Modified: 16 مايو 2026
Version:  2
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