R-MIC - Remote Memory In Cassette 
R/W - Read/Write 
RA - Real Address 
RA - Registration Authority 
RA - Remote Access 
RA3 - Rocket Arena 3 
RAB - RAID Advisory Board 
RABF - Redundant Accumulative Backhitc… 
RAC - Random Access Channel 
RAC - Real Application Cluster 
RAC - Reliability Analysis Component 
RACE - Rowbased ASCII Compatible Encod… 
RACER - Renamed Abox and Concept Expre… 
RACF - Resource Access Control Facilit… 
RACH - Random Access Channel 
RAD - Rapid Access Disk 
RAD - Rapid Application Development 
RAD - Research And Development 
RADIUS - Remote Authentication Dial-In… 
RADSL - Rate Adaptive Digital Subscrib… 
RAFF - Rotary Acceleration Feed Forwar… 
RAI - Remote Alarm Indication 
RAID - Redundant Array of Independent… 
RAID - Redundant Array of Inexpensive… 
RAID - Redundant Arrays of Independent… 
RAIDIOS - RAID I/O Steering 
RAII - Resource Acquisition Is Initial… 
railML - Railway Markup Language 
RAIR - Random Access Information Retri… 
RAIT - Redundant Array of Inexpensive…