Unisphere for VMAX: Protecting a Storage Group (SG) with SRDF Metro fails with "The remote connection attempt for the dynamic RDF group operation has timed out"

           

   Article Number:     494844                                   Article Version: 3     Article Type:    Break Fix 
   

 


Product:

 

Unisphere for VMAX

 

Issue:

 

 

When attempting to protect an existing Storage Group (SG) with SRDF Metro via Unisphere for VMAX, the operation fails with the error "The remote connection attempt for the dynamic RDF group operation has timed out"   
   
    Error msg:   
        

      Starting Tasks...           
            Protect Storage Group - SRDF/Metro Test_1 as an SRDF/Metro Storage Group...           
            SRDF group port requirement: 2           
            SRDF group fiber protocol: Yes           
            SRDF/Metro group requested, searching for empty SRDF groups           
            No SRDF groups discovered with enough ports for Active, creating new group           
            Finding local SRDF ports which can see SRDF ports on Symmetrix 000xxxxxxx           
            Local SRDF port RF-1E:7 can see 1 remote array ports           
            Considering remote port RF-1E:7           
            Candidate remote SRDF port RF-1E:7 is FC           
            Local SRDF port RF-1E:11 can see 1 remote array ports           
            Considering remote port RF-1E:11           
            Candidate remote SRDF port RF-1E:11 is FC           
            Local SRDF port RF-1E:27 can see 1 remote array ports           
            Considering remote port RF-1E:27           
            Candidate remote SRDF port RF-1E:27 is FC           
            Local SRDF port RF-1E:31 can see 1 remote array ports           
            Considering remote port RF-1E:31           
            Candidate remote SRDF port RF-1E:31 is FC           
            Local SRDF port RF-2E:7 can see 1 remote array ports           
            Considering remote port RF-2E:7           
            Candidate remote SRDF port RF-2E:7 is FC           
            Local SRDF port RF-2E:11 can see 1 remote array ports           
            Considering remote port RF-2E:11           
            Candidate remote SRDF port RF-2E:11 is FC           
            Local SRDF port RF-2E:27 can see 1 remote array ports           
            Considering remote port RF-2E:27           
            Candidate remote SRDF port RF-2E:27 is FC           
            Local SRDF port RF-2E:31 can see 1 remote array ports           
            Considering remote port RF-2E:31           
            Candidate remote SRDF port RF-2E:31 is FC           
            Evaluating local ports for pairing candidates           
            Local candidates calculated: RF-1E:11, RF-2E:31, RF-2E:11, RF-1E:31, RF-1E:27, RF-2E:27, RF-1E:7, RF-2E:7           
            Evaluating remote ports for pairing candidates           
            Remote candidates calculated: RF-2E:27, RF-1E:31, RF-2E:31, RF-1E:11, RF-2E:11, RF-2E:7, RF-1E:27, RF-1E:7           
            Local ports for SRDF group: RF-1E:11, RF-2E:31           
            Remote ports for SRDF group: RF-2E:27, RF-1E:31           
            Creating SRDF Group Test_1 with RDFG number 2           
            SRDF/Metro Protection Setup Failed           
            The remote connection attempt for the dynamic RDF group operation has timed out
   
                                                             

 

 

Cause:

 

 

Software error. The masking bit for port was overwritten. For example, 1E will contain ports 7,11,27,31 this will cause the bytes responsible for ports 27 and 31 to overwrite each other.                                                           

 

 

Resolution:

 

 

This Issue has been addressed in Unisphere for VMAX version 8.4.0 and later.