Hardware Spec Index

Mirenta HD-7721 Ultra 4TB 5,400 RPM CMR Surveillance Hard Drive

Hard Drives · Mirenta · SKU HD7721-ULTRA · Released 2025 · Updated 2026-10-19

Key facts

Benchmark index731 (Hard Drives scale)
Category rank#30,528
Street price$59
Power5 W
Performance per dollar12.39
Released2025

Specifications

BrandMirenta
ModelMirenta HD-7721 Ultra
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
Strivon HD-6356 Core 8TB 7,200 RPM CMR NAS Hard Drive1,471$149Compare
Altrix HD-5521 Core 4TB 5,400 RPM CMR Surveillance Hard Drive1,342$109Compare
Strivon HD-9085 Core 16TB 7,200 RPM CMR NAS Hard Drive2,544$339Compare
Novexa HD-2095 Ultra 4TB 5,400 RPM CMR Surveillance Hard Drive1,425$129Compare
Strivon HD-4973 Ultra 16TB 7,200 RPM CMR Enterprise Hard Drive1,841$209Compare
Altrix HD-2222 XT 16TB 7,200 RPM CMR NAS Hard Drive2,567$439Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Mirenta HD-7721 Ultra 4TB 5,400 RPM CMR Surveillance Hard Drive”, https://vextor7.com/item/19251941 (accessed 2026-10-19).