Seagate Constellation 3TB ES.2 ST33000650SS 3.5 Enterprise Internal Hard Drive Bare Drive ST33000650SS Overview Capacity: 3TB Form Factor: 3.5 Interface: SAS Speed: 7.2K Transfer Rate: 6Gb/s Tray Type : Drive Type: HDD Capacity: 3TB Form Factor: 3.5 Interface: SAS Speed: 7.2K Transfer Rate: 6Gb/s Tray Type : Drive Type: HDD Information technology professionals rely on our variety of new tested Seagate capable SAS Hard Drives offering data integrity and availability in hot-pluggable models. All Seagate Hard Drives pass a rigorous qualification process which ensures that every drive is proven to perform in your server. Before final certification all Seagate SAS Hard Drives are optimized for compatibility and functionality. ST33000650SS Specification Seagates Constellation enterprise hard drives come in 6Gbps SAS and SATA interfaces, we pit them against one another using the second-gen Constellation.2 2.5 drive and fifth-gen Constellation ES.2 3.5 drive. The following models are participating in this review: Seagate Constellation ES.2 3TB SAS interface (ST33000650SS) Seagate Constellation ES.2 3TB SATA interface (ST33000651SS) Seagate Constellation.2 1TB SAS interface (ST91000640SS) Seagate Constellation.2 1TB SATA interface (ST91000641SS) First lets consider the 2.5-inch Constellation.2. Seagate says this second-generation drive is the first 2.5-inch enterprise drive with a 1TB capacity in a 15mm z-height drive. Designed for 24/7 operation, it features a 7200RPM spindle speed and 64MB cache. The company claims the drive consumes 6.4 watts of power or less on average, or 41% less than typical 3.5-inch enterprise drives. The Constellation.2 is also available in 500GB and 250GB capacities (250GB in SATA 6Gbps only). The 1TB drive has four 250GB platters. Constellation.2 1TB Specifications (ST91000640SS/ST91000641SS) Available Capacities: 250GB/500GB/1TB Interfaces: SATA 6Gbps, SAS 6Gbps (500GB/1TB only) Spindle Speed: 7200RPM Cache: 64MB Seek Time, Average Read/Write (ms): 8.5/9.5 Average Latency (ms): 4.16 Interface Ports: Dual Idle Power Consumption: 3.85W Random Read Operating Power Consumption: 6.4W MTBF: 1.4 million hours Constellation ES.2 3TB Specifications (ST33000650SS/ST33000641SS) Available Capacities: 3TB Interfaces: SATA 6Gbps, SAS 6Gbps Spindle Speed: 7200RPM Cache: 64MB Seek Time, Average Read/Write (ms): 8.5/9.5 Average Latency (ms): 4.16 Interface Ports: Dual Idle Power Consumption: 7.4W Random Read Operating Power Consumption: 11.3W MTBF: 1.2 million hours Category Seagate HardDrive Sub-Category 7.2K Generation SAS Part Number ST33000650SS Products ID 470971 Capacity 3TB Interface Serial Attached SCSI (SAS) Enclosure Internal Spindle Speed 7200RPM Data Transfer Rate 600MB/s Average Latency 4.16ms HotSwap Yes Manufacturer Seagate Pre-Failure Warranty Yes Hot Swap Tray Not Included Form Factor 3.5 inches x 1/3H (LFF) Ports Dual Port Cache 64MB Business
