Review on 12TB HGST - WD Ultrastar DC HC520 Helium HDD Review: High-Capacity SATA 6Gb/s Hard Drive by Qu Vn Nguyn (Mng Tay ᠌

Name: 12TB HGST - WD Ultrastar DC HC520 Helium HDD Review: High-Capacity SATA 6Gb/s Hard Drive
Item: 12TB HGST - WD Ultrastar DC HC520 Helium HDD Review: High-Capacity SATA 6Gb/s Hard Drive
Rating: 5

February 21, 2023

Great quality, happy with it one hundred percent!

4th generation helium disk technology, 2.5 million hours MTBF and 600,000 cycles on and off, 5 year warranty, line speed: 243 MB/s (write) and 255 MB/s (read).

I purchased two of these drives for a NAS server a little less than a year ago, they work there 24/7, and have already accumulated 5,693 hours. No problems have arisen. I recommend to everyone.
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Pros

- Large capacity — High reliability - filled with helium - not noisy — Technology of perpendicular magnetic recording PMR - The presence of protection against rotational vibration - RVS (Rotational Vibration Safeguard) (relevant for multi-disk systems) - Second generation of two-stage actuator for more precise positioning of the read head — The presence of a backup microcircuit with firmware (Dual safe firmware technology) - Cache 256 MB - Doesn't heat up

Cons

No deficiencies found. Unless a large number of pancakes: 8 plates with a capacity of 1.5 TB each and 2 heads for each plate adds complexity to the design. Maybe the price, but it's all relative.