Hardware Spec Index

Altrix HD-6557 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Altrix · SKU HD6557-ULTRA · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index2,686 (Hard Drives scale)
Category rank#32,538
Street price$529
Power8 W
Performance per dollar5.08
Released2019

Specifications

BrandAltrix
ModelAltrix HD-6557 Ultra
Capacity20 TB
ClassEnterprise
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer280 MB/s
Workload rating550 TB/year
MTBF2.5 million hours
Helium-filledYes
Warranty5 years

Related guides

CMR vs SMR Hard DrivesNAS RAID Levels Explained

Similar Hard Drives

ModelBenchmarkPriceCompare
Strivon HD-8971 XT 8TB 7,200 RPM CMR Surveillance Hard Drive1,684$209Compare
Mirenta HD-1634 Prime 6TB 5,400 RPM SMR Desktop Hard Drive1,095$79Compare
Strivon HD-5199 Pro 6TB 5,400 RPM CMR Desktop Hard Drive1,768$229Compare
Strivon HD-7054 SE 20TB 7,200 RPM CMR NAS Hard Drive2,505$359Compare
Altrix HD-2145 Core 2TB 5,400 RPM CMR Surveillance Hard Drive1,139$89Compare
Novexa HD-4738 Plus 16TB 7,200 RPM CMR Enterprise Hard Drive2,804$479Compare

All Hard Drives · JSON

Cite this page: Hardware Spec Index, “Altrix HD-6557 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/3225628 (accessed 2026-10-20).