Error : "Duplicate device found in SRA's 'discoverDevices' response" while running Discover Devices in Site Recovery UI

Products

• VMware Live Recovery

Issue/Introduction

Symptoms : 

• On running Discover Devices in Site Recovery UI following error is observed:
  
  (under Site Recovery UI > Click on 'Site Pair' tab > Array Pairs > Select appropriate 'Array Pair' > run 'Discover Devices')

"Duplicate device ##:##:##:##:##:##:##:##:##:##:##:##:##:##:##:## found in SRA's 'discoverDevices' response".
  
  (Note : The hashed out value above is WWN ID of LUN/device for which this error is reported)
  
  
  
• At protected site, duplicate device errors are logged in server logs:
  
  (from /opt/vmware/support/logs/srm/vmware-dr.log)

2026-07-15T16:09:14.595+10:00 info vmware-dr[01186] [SRM@6876 sub=DrTask opID=########-####-####-####-############-discoverDevices:ff7d] Task 'dr.storage.ReplicatedArrayPair.discoverDevices2433' failed
--> (dr.storage.fault.DuplicateDevice) {
-->    faultCause = (vmodl.MethodFault) null,
-->    faultMessage = <unset>,
-->    command = "discoverDevices",
-->    responseXml = "<TargetDevice key="##:##:##:##:##:##:##:##:##:##:##:##:##:##:##:##"/>",
-->    id = "##:##:##:##:##:##:##:##:##:##:##:##:##:##:##:##"
-->    msg = ""
--> }

Environment

VMware Live Site Recovery 9.x

Cause

• This error because of same replicating device (for which the WWN is reported in error message) is being configured as target device for two different source devices.
  
  
  
• SRA config file named ########_discoverDevices_log.xml reports two different source devices being replicating to same target device.
  
  (Path for this file in VLSR server : /opt/vmware/support/logs/srm/sra/########_discoverDevices_log.xml)
  
  

  <Name><Source_Device_A></Name>
<TargetDevices>
<TargetDevice key="##:##:##:##:##:##:##:##:##:##:##:##:##:##:##:##" />
</TargetDevices>
</TargetGroup>
<TargetGroup key="################">
  
  

  <Name><Source_Device_B></Name>
<TargetDevices>
<TargetDevice key="##:##:##:##:##:##:##:##:##:##:##:##:##:##:##:##" />
</TargetDevices>
</TargetGroup>
<TargetGroup key="################}">

Resolution

Connect with Storage/SRA vendor to validate SRA configuration and perform cleanup to remove one of two replication pair.