PowerVault ME5: Attached hosts are reporting not redundant and not mapped

Summary: This article covers an issue where attached hosts show non-redundant during controller reboots on ME50xx storage.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

ME5 Storage Management will report host map and host redundancy errors after the controller reboots. There is no connectivity loss if Multipath I/O (MPIO) is configured correctly. This message only appears in the UI; the CLI does not display any errors.

Host redundant error
Here are some scenarios related to Microsoft Windows and ESXi (VMware) platforms:
  1. Microsoft Windows multipathing was configured correctly
  2. After restarting controller A, the redundant Windows volume did not prompt any errors
  3. After both controllers are up,
    1. Restart controller "B" and the Windows volume prompts a redundant error after Controller B completes the reboot
    2. Rebooting controller "A" again after both controllers are up, the volume redundant error will be resolved

ESXi:
Attached hosts 
#show host-groups
Name    Number of Members 
--------------------------
VMware  7   
   Name      Number of Members 
   ----------------------------
   flxxxxxx  1   
      Nickname  Discovered Mapped Profile  Host Type  ID                                                             
      ---------------------------------------------------------------------------------------------------------------
      flxxxxxx  Yes        Yes    Standard iSCSI      iqn.xxxx-xx.com.vmware:flxxxxxx.xx.xxxx.com.br:xxxxxxxxxx:xx

From VMware side we can see multiples path to both controllers:
 
storage nmp path list

Device Display Name

2 volumes:

naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx VOL01_SSD-SAS 63330c08-xxxxxx-xxxx-xxxxxxxxxxxxxx
naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx VOL02_SAS 63330c3a-xxxxxx-xxxx-xxxxxxxxxxxxxxx

DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)VMW_PSP_RRVMW_SATP_ALUAvmhba64:C0:T0:L0vmhba64:C2:T0:L0
DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)VMW_PSP_RRVMW_SATP_ALUAvmhba64:C3:T0:L1vmhba64:C1:T0:L1

8 paths - Two paths per controller and 4 per Volume:

Path Selection Policy Path ConfigStorage Array Type Path ConfigDellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=0,TPG_state=AO,RTP_id=1,RTP_health=UP}DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=0,TPG_state=ANO,RTP_id=1,RTP_health=UP}DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=1,TPG_state=ANO,RTP_id=7,RTP_health=UP}DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=1,TPG_state=AO,RTP_id=7,RTP_health=UP}DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=0,TPG_state=AO,RTP_id=3,RTP_health=UP}DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=0,TPG_state=ANO,RTP_id=3,RTP_health=UP}DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=1,TPG_state=ANO,RTP_id=5,RTP_health=UP}DellEMC iSCSI Disk (naa.600c0fxxxxxxxxxxxxxxxxxxxxxxxxxx)PSP VMW_PSP_RR does not support path configuration.{TPG_id=1,TPG_state=AO,RTP_id=5,RTP_health=UP}

Cause

Based on the observations, the host initiators do not log in during Controller B reboot.
The Controller Web-Based Instruction (WBI) is reporting the correct status. This is considered working as per design.

Resolution

Perform a rolling reboot on the array controllers.
  1. Reboot Controller A.
  2. Once Controller A comes back online
  3. Reboot controller B
  4. Once B comes online
  5. Reboot Controller A again.
Or
Rebooting the hosts connected to storage one at a time resolves the issue.

Affected Products

PowerVault ME5012, PowerVault ME5024, PowerVault ME5084

Products

ME Series
Article Properties
Article Number: 000227329
Article Type: Solution
Last Modified: 27 Feb 2025
Version:  3
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