Hardware Spec Index

Mirenta HD-1639 Ultra 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Mirenta · SKU HD1639-ULTRA · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index2,632 (Hard Drives scale)
Category rank#19,411
Street price$419
Power8 W
Performance per dollar6.28
Released2021

Specifications

BrandMirenta
ModelMirenta HD-1639 Ultra
Capacity20 TB
ClassNAS
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer280 MB/s
Workload rating300 TB/year
MTBF1.2 million hours
Helium-filledYes
Warranty3 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Mirenta HD-6118 Core 4TB 5,400 RPM SMR Desktop Hard Drive1,475$149Compare
Mirenta HD-1780 Max 8TB 7,200 RPM CMR Surveillance Hard Drive1,840$189Compare
Mirenta HD-1420 Prime 20TB 7,200 RPM CMR NAS Hard Drive2,840$479Compare
Altrix HD-9085 SE 8TB 7,200 RPM CMR Surveillance Hard Drive1,239$119Compare
Mirenta HD-7560 Ti 6TB 5,400 RPM SMR Desktop Hard Drive1,343$119Compare
Strivon HD-2704 Edge 2TB 5,400 RPM CMR Surveillance Hard Drive832$59Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-1639 Ultra 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/9864233 (accessed 2026-10-21).