The HP ProLiant ML350 G5 Storage Server is Network Attached Storage (NAS) solution built upon proven fifth generation HP ProLiant server technology and the Windows Storage Server 2003 Release 2 (WSS2003 R2) operating system. The ML350 G5 Storage Server delivers a versatile, simple-to-manage, high performing and reliable networked attached storage server ideal for small and medium businesses or branch office locations. Because the hardware is pre-configured and the software is pre-installed the storage server can be deployed quickly and easily. The HP ProLiant ML350 G5 Storage Server offers a redundant OS partition and quick-restore functionality via DVD for system protection and recovery. HP ProLiant ML350 G5 Storage Server is available in three models based on capacity. Three models use internal SATA hard disk drives and is available with 960GB, 1.5TB or 3TB of raw capacity. One model uses internal SAS hard disk drives and is available with 1.8TB of raw capacity.