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

Seagate's 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 let’s 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

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