Developer question - SRDF source and target on same array

You could in previous generations of Symmetrix configure SRDF how you want to.  I think when the DMX series was released EMC no longer supported it and you (to my knowledge) cannot configure SRDF from same array to same array.  We used to do it for lab use and learning purposes; which is what I think you are looking for.

Hi Pavan,

i tried to create and SDRF Group on the same (Hardware group) in a VMAX 20K and in a DMX4 and it was not possible.

Probably you are right Mr. Hosterman, because i could not have the chance to use Static RDF. We use only Dynamic.

I will check it tomorrow again.

I think it might still be possible, but I believe it requires static RDF and P2P connection.

There goes Cody thinking outside that box again, good job.

Thank you all for your response.

Cody, from what I read it looks like Static RDF requires a bin file change which can be done only by EMC Support. Is there a way to set this up from SYMCLI or from Unisphere? Also, can you please elaborate on the P2P connection - what it is and how to set it up?

NY Yankees, please let us know if it worked. Also if possible, please share the procedure and any documentation related to it. Thank you!

No, the creation of static RDF group cant be done using the SYMCLI/SMC/Unisphere. It is created through BIN file change only.

regards,

Saurabh

Is it mandatory to have a static group on VMAX for creating new dynamic groups ?

We don't have SRDF as of now but i am checking the feasibility. So can you please advice "How can i check that if EMC created a static RDF group when new VMAX was configured or not ?"

you don't need static rdf groups to use dynamic groups. To check what kind of groups you have

$ symcfg list -sid 1234 -RA ALL -switched

Symmetrix ID: 000190101234

            S Y M M E T R I X    R D F    D I R E C T O R S


        Local              Group      Link               Remote             
-------------------- ---------------- ---- ---------------------------------
                                 FLGS FLGS                                  
Ident  Symb  RA Grp  T Name       SH   SH  SymmID       Ident  Symb  RA Grp 
------ ---- -------- ---------------- ---- ------------ ------ ---- --------

RF-7D  07D    8 (07) D dyn1   --   ..  000000605678 RF-7H  07H    8 (07)
             10 (09) D dyn3   --   ..  000000604987 RF-7H  07H   10 (09)
              2 (01) S GRP01      XX   --  -            -      -     -      
              3 (02) S GRP02      XX   --  -            -      -     -      
              4 (03) S GRP03      XX   --  -            -      -     -      
             11 (0A) D dmx91dmx18 XX   --  -            -      -     -      

You can use the "convert dir" function of symconfigure..

convert dir to type=RF;

Should work, if you met the requirements... I think they are: no devices mapped, have a license, not in data mobility mode, and can't be a 16gb director..

Thanks Dynamox

Just checked and found that no RA and No RDF groups are defined on my VMAX boxes.

So plan would be to convert 2 FA Directors on both VMAX to RA or RF. Then create Dynamic RDF group and start SRDF ..

yep, i believe if you are on 76, you can convert FA to RF yourself now where before it required a bin file change by EMC CE.