Hardware Spec Index

Mirenta HD-3991 Ultra 6TB 5,400 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD3991-ULTRA · Released 2026 · Updated 2026-10-26

Key facts

Benchmark index1,531 (Hard Drives scale)
Category rank#9,876
Street price$149
Power5 W
Performance per dollar10.28
Released2026

Specifications

BrandMirenta
ModelMirenta HD-3991 Ultra
Capacity6 TB
ClassSurveillance
RecordingCMR (conventional magnetic recording)
Spindle speed5,400 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer190 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-3991 Ultra 6TB 5,400 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/9700270 (accessed 2026-10-26).