Hardware Spec Index

Mirenta HD-9121 XT 4TB 5,400 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD9121-XT · Released 2019 · Updated 2026-10-23

Key facts

Benchmark index1,186 (Hard Drives scale)
Category rank#23,348
Street price$119
Power5 W
Performance per dollar9.97
Released2019

Specifications

BrandMirenta
ModelMirenta HD-9121 XT
Capacity4 TB
ClassSurveillance
RecordingCMR (conventional magnetic recording)
Spindle speed5,400 RPM
Cache256 MB
InterfaceSATA 6 Gb/s
Sustained transfer180 MB/s
Workload rating180 TB/year
MTBF1 million hours
Helium-filledNo
Warranty2 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Altrix HD-7187 Ti 24TB 7,200 RPM CMR Enterprise Hard Drive2,738$519Compare
Strivon HD-9325 XT 6TB 5,400 RPM CMR NAS Hard Drive1,779$219Compare
Strivon HD-1453 Ti 20TB 7,200 RPM CMR NAS Hard Drive2,954$509Compare
Novexa HD-4709 Ti 24TB 7,200 RPM CMR Enterprise Hard Drive2,761$539Compare
Novexa HD-9737 Max 8TB 7,200 RPM CMR NAS Hard Drive2,107$259Compare
Strivon HD-7882 SE 2TB 5,400 RPM SMR Desktop Hard Drive1,090$79Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-9121 XT 4TB 5,400 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/3387670 (accessed 2026-10-23).