Hardware Spec Index

Mirenta HD-3947 Ultra 2TB 5,400 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD3947-ULTRA · Released 2020 · Updated 2026-10-26

Key facts

Benchmark index749 (Hard Drives scale)
Category rank#41,293
Street price$49
Power4 W
Performance per dollar15.29
Released2020

Specifications

BrandMirenta
ModelMirenta HD-3947 Ultra
Capacity2 TB
ClassSurveillance
RecordingCMR (conventional magnetic recording)
Spindle speed5,400 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer170 MB/s
Workload rating180 TB/year
MTBF1 million hours
Helium-filledNo
Warranty2 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Mirenta HD-2588 XT 28TB 7,200 RPM CMR Enterprise Hard Drive2,940$589Compare
Mirenta HD-8926 SE 6TB 5,400 RPM CMR NAS Hard Drive1,609$179Compare
Novexa HD-3926 SE 20TB 7,200 RPM CMR NAS Hard Drive2,167$339Compare
Altrix HD-3467 Edge 12TB 7,200 RPM CMR NAS Hard Drive2,189$339Compare
Novexa HD-8616 Prime 12TB 7,200 RPM CMR Desktop Hard Drive2,371$379Compare
Novexa HD-7139 Core 2TB 5,400 RPM CMR Desktop Hard Drive767$49Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-3947 Ultra 2TB 5,400 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/5755699 (accessed 2026-10-26).