Hardware Spec Index

Mirenta HD-3940 Ultra 8TB 7,200 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD3940-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index1,569 (Hard Drives scale)
Category rank#17,370
Street price$149
Power6 W
Performance per dollar10.53
Released2020

Specifications

BrandMirenta
ModelMirenta HD-3940 Ultra
Capacity8 TB
ClassSurveillance
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer220 MB/s
Workload rating180 TB/year
MTBF1 million hours
Helium-filledNo
Warranty2 years

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Cite this page: Hardware Spec Index, “Mirenta HD-3940 Ultra 8TB 7,200 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/7181364 (accessed 2026-10-23).