HP StorageWorks All-in-One Storage Systems AiO 600 3 TB SATA. Internal memory: 1024 MB, Maximum internal memory: 4 GB. Processor model: Dual Core Intel Xeon 2.67 GHz/1333 MHz FSB with 4 MB (1 x 4 MB) L2 Cache, Processor clock speed: 2670 MHz. Operating system installed: Windows Storage Server 2003 R2 (Standard Edition). Internal mass storage: 6 x 500 GB front loading, hot plug, 7200 RPM SATA HDDs. Redundant power supply (RPS) support: Standard