Disk Controller Chassis (XP)

DKC Power Supply (XP)

Drive or Disk Unit (XP)

Distributed Management Task Force (ProLiant)

Disaster Recover (Data Protector) 

Dynamic Random Access Memory  (ProLiant)

Data Reduction Volume (XP) 

Disaster Recovery Module  (Data Protector) 

Data Virtualization Platform (SimpliVity)

Drive Writes Per Day  (ProLiant)