The option is not available for the 8 bay version, only on the 12 bay.  The twelve bay R510 allows for 2 additional 2.5" cabled drives that are not hot swap capable.  Hope this answers your question. Regards,
This may be a dumb question, but I'm having difficulty finding a clear-cut answer to this question.  I know the 12-bay R510 configurations support the +2 internal drives inside the system.  But is there any 8-bay R510 version that also has the capability of adding 2 internal drives?  Or is this ONLY an option with the 12-bay units?   Thanks in advance for any clarification you can provide.
+2 Drive (internal drives) configuration with the 8-bay R510's?