Seagate Constellation ES.3 3.5-inch Enterprise Hard Drives – SATA / SAS
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Product Description
The Seagate Constellation ES.3 is a family of 3.5-inch internal enterprise hard drives for RAID storage, SAN, NAS and DAS systems. Applications also include cloud storage, enterprise backup and recovery, virtual tape and centralised surveillance. The range offers 1 TB, 2 TB, 3 TB and 4 TB capacities, with separate SATA 6 Gb/s and SAS 6 Gb/s variants at each capacity. The family operates at 7,200 rpm with 128 MB of multi-segment cache.
Designed for 24/7 operation, the family includes PowerChoice, ramp load technology and a humidity sensor. Average latency is 4.16 ms, with rotational vibration tolerance of 12.5 rad/s² at 1,500 Hz. Reliability specifications are a 1.4 million-hour MTBF and a 0.63% annualised failure rate.
The SAS 6 Gb/s references are ST1000NM0023 (1 TB), ST2000NM0023 (2 TB), ST3000NM0023 (3 TB) and ST4000NM0023 (4 TB). The SATA 6 Gb/s references are ST1000NM0033 (1 TB), ST2000NM0033 (2 TB), ST3000NM0033 (3 TB) and ST4000NM0033 (4 TB).
Standard idle power consumption ranges from 4.45 W to 7.80 W depending on the model and interface. Family dimensions are 26.1 mm high × 101.85 mm wide × 147.0 mm deep, with a five-year limited warranty.