Solid State Drives SSDs are fast becoming a real force with respect to storage in the computer industry. With no moving parts, storage is no longer bound by mechanical barriers to higher performance. HP SSDs for workstations offer overall performance typically beyond that of SAS 15k rpm HDDs Hard Disk Drives. Higher overall performance than 15k HDDs based on random IOPs, sustained reads and sustained writes. Lower systems level acoustical emissions than systems with HDDs, especially 15k rpm HDDs. More rugged than HDDs with respect to shock and vibration.