Hardware Spec Index

Mirenta HD-9855 Ultra 6TB 5,400 RPM CMR NAS Hard Drive

Hard Drives · Mirenta · SKU HD9855-ULTRA · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index1,210 (Hard Drives scale)
Category rank#15,021
Street price$99
Power5 W
Performance per dollar12.22
Released2021

Specifications

BrandMirenta
ModelMirenta HD-9855 Ultra
Capacity6 TB
ClassNAS
RecordingCMR (conventional magnetic recording)
Spindle speed5,400 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer190 MB/s
Workload rating300 TB/year
MTBF1.2 million hours
Helium-filledNo
Warranty3 years

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Cite this page: Hardware Spec Index, “Mirenta HD-9855 Ultra 6TB 5,400 RPM CMR NAS Hard Drive”, https://vextor7.com/item/12813409 (accessed 2026-10-26).