Internal Hard Drives S300 pro For NAS and other high-performance storage demands Basic Specifications Form factor 3,5-inch Interface 6.0 Gbit/s Number of cameras supported up to 64 Drive bays supported 1 to 8 Rotational Vibration (RV) Sensors yes (HDWT140UZSVA) Advanced Format (AF) yes RoHS compatible yes Halogen FreeNo Shock Sensor yes Recording Technology CMR: HDWT140UZSVA, HDWV110UZSVA SMR: HDWT740UZSVA, HDWT720UZSVA, HDWT860UZSVA, HDWT840UZSVA Performance Rotational speed 5400 rpm (2 TB- 6 TB) 5700 rpm (1 TB) Max. data transfer speed (sustained) 153 MB/s Typ. (1 TB CMR) 157 MB/s Typ. (4 TB CMR) 184MB/s Typ. (2 TB, 4 TB SMR, 6 TB) Buffer size 256 MB (6 TB) 128 MB (2 TB - 4 TB) 64 MB (1 TB) Average latency 5,56 ms Native Command Queing (NCQ) supported Reliability Workloads 110 TB/year (4 TB CMR) 180 TB/year (1 TB, 2 TB, 4 TB SMR, 6 TB) MTTF 1.000.000 hours Unrecoverable error rate 1 per 10E14 bits read 24/7 operation yes Load / Unload Cycle 600.000 (2 TB - 6 TB) 300.000 (1 TB) Limited warranty 3 years Power Management Supply voltage 5V DC ±5%; 12V DC ±10% Consumption (operating) 7.50 W typ. (4 TB CMR) 5.70 W typ. (1 TB CMR) 4.84 W typ. (6 TB SMR) 4.36 W typ. (4 TB SMR) 4.11 W typ. (4 TB SMR) 4.01 W typ. (2 TB SMR) Consumption - Active Idle 4.00 W typ. (4 TB CMR) 3.00 W typ. (1 TB CMR) 2.81 W typ. (6 TB SMR) 2.36 W typ. (4 TB SMR) 2.33 W typ. (4 TB SMR) 2.08 W typ. (2 TB SMR) Environmental Temperature (operating / non-operating) 0 - 70° C / -40 - 70° C (2 TB - 6 TB) 0 - 65 °C / -40 - 70 °C (1 TB) Vibration (operating) 4 TB CMR: 0.75 G (5 to 300 Hz) 0.25 G (300 to 500 Hz) 2 TB, 4TB SMR, 6 TB: 0.50 G (5 to 350 Hz) 0.25 G (350 to 500 Hz) 1 TB: 0.67 G (5 to 500 Hz) Vibration (non-operating) 29.4 m/s2 {3.0 G} (5 to 500 Hz) (6 TB, 4 TB SMR, 2 TB) 49.0 m/s2 {3.0 G} (5 to 500 Hz) (4 TB CMR) 10.2 m/s2 {1.04 G} (2 to 200 Hz) (1 TB) Shock (operating) 70 G / 2 ms duration Shock (non-operating) 6 TB, 4 TB CMR: 300 G / 2 ms duration 1 TB, 2 TB, 4TB SMR: 350 G / 2 ms duration Acoustics (idle mode) 26 dB typ. (4 TB CRM) 24 dB typ. (6 TB SRM) 22 dB typ. (4 TB SMR) 21 dB typ. (2 TB SMR) 19 dB typ. (1 TB CRM) Physical Dimensions 147(L) x 101.85(W) x 26.1(H)mm Weight (approx.) 720 g max. (4 TB CMR) 680 g max. (6 TB SMR) 650 g max. (4 TB SMR) 450 g max. (1 TB CMR) 440 g max. (2 TB SMR)