Why STOR2RRD needs admin access to EMC² VPLEX
There is no roles in VPLEX 5.x and lower, therefore only admin access can be used.
The tool requires role "vplexuser" on VPLEX 6.
Note that Unisphere API access can be avoided at all if you do not want to grant admin role.
Then some information will be missed in the product but most of performance data will be available (through read only ssh access to the VPLEX management box).
For more information refer to installation manuall