Hardware Spec Index

Mirenta HD-9421 Edge 12TB 7,200 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD9421-EDGE · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index1,574 (Hard Drives scale)
Category rank#26,138
Street price$169
Power7 W
Performance per dollar9.31
Released2020

Specifications

BrandMirenta
ModelMirenta HD-9421 Edge
Capacity12 TB
ClassSurveillance
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer240 MB/s
Workload rating180 TB/year
MTBF1 million hours
Helium-filledYes
Warranty2 years

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Cite this page: Hardware Spec Index, “Mirenta HD-9421 Edge 12TB 7,200 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/7399272 (accessed 2026-10-24).