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| Item number: CIEN3-120749492 Manufacturer no.: ST20000NT001-20PK EAN/GTIN: n/a |
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![](/p.gif) | IronWolf Pro drives are engineered to deliver 24×7 performance, reliability, and dependability in multi-bay, multi-user commercial and enterprise RAID storage solutions. Total peace of mind with five-year limited warranty, complimentary three-year Rescue Data Recovery Services, and IronWolf Health Management. More information: Features | HDD size | 3.5 " | ![](/p.gif) | HDD capacity | 20000 GB | ![](/p.gif) | HDD speed | 7200 RPM | ![](/p.gif) | Type | HDD | ![](/p.gif) | Component for | NAS | ![](/p.gif) | Storage drive buffer size | 256 MB | ![](/p.gif) | HDD interface transfer rate | 6 Gbit/s | ![](/p.gif) | HDD sustained transfer rate | 285 MiB/s | ![](/p.gif) | Uncorrectable Bit Error Rate (UBER) | < 1 per 10^15 bits read | ![](/p.gif) | Rotational Vibration (RV) sensors | Yes | ![](/p.gif) | Workload rate limit | 550 TB/year | ![](/p.gif) | Noise level (idle) | 20 dB | ![](/p.gif) | Mean time to failure (MTTF) | 2500000 h | ![](/p.gif) | Mean time between failures (MTBF) | 2500000 h | Packaging data | Quantity | 20 | Weight & dimensions | Width | 101.85 mm | ![](/p.gif) | Height | 26.11 mm | ![](/p.gif) | Depth | 146.99 mm | ![](/p.gif) | Weight | 670 g | Operational conditions | Operating temperature (T-T) | 0 - 65 °C | ![](/p.gif) | Storage temperature (T-T) | -40 - 70 °C | ![](/p.gif) | Non-operating vibration | 2.27 G | ![](/p.gif) | Operating shock | 40 G | ![](/p.gif) | Non-operating shock | 200 G | Power | Power consumption (typical) | 7.7 W | ![](/p.gif) | Power consumption (standby) | 1 W | ![](/p.gif) | Power consumption (off) | 1 W | ![](/p.gif) | Power consumption (idle) | 5.5 W | ![](/p.gif) | Operating voltage | 5 / 12 V | ![](/p.gif) | Start-up current | 2 A |
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