What was the specific error message did you get when trying to expand the R2 device?  Is the R2 device mapped to an FA by any chance?  You can't expand a device while online without protecting the data.
I performed a striped meta expansion over the weekend. the device was part of a SRDF pair. I had planned on performing a protected expansion on the R1 device and a unprotected expansion on the R2 device.  The protected expansion was successful: symconfigure -sid 3938 -cmd "add dev 05da to meta 08fc,protect_data=TRUE,bcv_meta_head=065a;" commit  but I was unable to perform an unprotected expansion on the R2 device. It said it wasn't permitted. symconfigure -sid 3923 -cmd “add dev 06dd to meta 0929,protect_data=FALSE;” prepare  I ran the process through EMC Chat on Friday and was told it should work. I think the process failed because in order to perform the expansion, I had to suspend the rdf group, and delete the pair relationship thus it wasn't sure if it was an R2 device anymore. Neither R1/R2 device is explicitly defined - they can both be R1/R2, depending on the direction. symrdf -g sqlprod05v suspend symrdf -sid 3938 -f 08fc.txt -rdfg 24 deletepair  Does this sound plausible? Is it possible to perform an unprotected striped meta expansion and if so, was my command wrong?  Thanks.
striped meta expansion