Hardware Spec Index

Mirenta HD-3945 Plus 20TB 7,200 RPM CMR NAS Hard Drive

Hard Drives · Mirenta · SKU HD3945-PLUS · Released 2023 · Updated 2026-10-20

Key facts

Benchmark index2,560 (Hard Drives scale)
Category rank#22,509
Street price$379
Power8 W
Performance per dollar6.75
Released2023

Specifications

BrandMirenta
ModelMirenta HD-3945 Plus
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
Altrix HD-5130 Ti 28TB 7,200 RPM CMR NAS Hard Drive2,754$509Compare
Strivon HD-3596 Prime 20TB 7,200 RPM CMR NAS Hard Drive2,691$479Compare
Altrix HD-2398 Edge 4TB 5,400 RPM CMR Surveillance Hard Drive753$59Compare
Novexa HD-7470 XT 24TB 7,200 RPM CMR NAS Hard Drive2,753$569Compare
Altrix HD-3962 Max 6TB 5,400 RPM CMR Surveillance Hard Drive1,081$69Compare
Mirenta HD-7917 SE 12TB 7,200 RPM CMR Surveillance Hard Drive2,073$229Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-3945 Plus 20TB 7,200 RPM CMR NAS Hard Drive”, https://vextor7.com/item/9955464 (accessed 2026-10-20).