Hardware Spec Index

Mirenta HD-7840 XT 12TB 7,200 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD7840-XT · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index2,347 (Hard Drives scale)
Category rank#43,603
Street price$409
Power7 W
Performance per dollar5.74
Released2022

Specifications

BrandMirenta
ModelMirenta HD-7840 XT
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-7840 XT 12TB 7,200 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/4621793 (accessed 2026-10-24).