Why STOR2RRD needs admin access to EMC² VPLEXThere is no read-only role in VPLEX 5.x and lower.
Read-only role will be in VPLEX 6 as per this article.
As soon as we get access to VPLEX 6.x then we will implement read-only access instead of admin one.
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.