无法在 SANtricity Unified Manager 上创建异步镜像对

由于与远程阵列的通信问题，无法在异步镜像组中创建第二个镜像对。
SANtricity Unified Manager 报告：
- Error: Failed to create mirrored pair because: The operation cannot complete because the storage array cannot communicate with the remote storage array to complete this request. Possible causes include network or connection problems, or no power to the storage array. Check these possible causes then retry the operation. (API 180)

在 ASUP > trace-buffers 记录控制器 A 上单个端口的超时：
- Controller A：
  - 01/29/26-16:48:45.447024 00 symTask2 sym ffff symbol [TCP:417] RPC testAsyncMirrorGroupConnectivity_1 (#684, ::ffff:192.0.2.31:33166).
  - 01/29/26-16:48:45.447182 03 CPU3Sched1 eel hffff LogError ioId:x0a496eea errId:x0 DST_SEL_RESEL_TIMEOUT(x104) origin:Internal(3) fru/t/s:x000000
- 控制器 B：
  - 01/29/26-16:49:22.308982 00 symTask1 sym ffff symbol [TCP:418] RPC testAsyncMirrorGroupConnectivity_1 (#684, fd94:29f8:cf58:3::1:44098).
  - 01/29/26-16:49:22.311267 00 symTask1 sym ffff symbol [TCP:418] RPC testAsyncMirrorGroupConnectivity_1 (#684, fd94:29f8:cf58:3::1:44098) returned.
从控制器 B 成功创建第一个异步镜像对，在主要事件日志中确认：
- B:1/27/26,7:39:18 PM (19:39:18) 4483 7c0c Asynchronous mirror group has been created - Asynchronous Mirror Group mirror1