2x 20TB WD Ultrastar DC HC560 (CRM + 7200RPM + 512MB Cache + OptiNAND HelioSeal EAMR TSA) | Unboxing

WD Ultrastar DC HC560 20TB
SN: WUH722020ALE6L4
PN: 0F38755
Model: 20 TB SE SATA
(exist more variants SE&SATA SED&SATA SE&SAS SED&SAS)

SPECS
* Special Functions: OptiNAND (UFS, EFD), Energy-Assisted -Magnetic Recording Technology (EAMR), Triple-Stage Actuator (TSA), 7th generation HelioSeal
Configuration
* Form Factor. 3.5 Inch
* Interface: SATA 6Gb/s (exist version SATA 6Gb/s and SAS 12Gb/s)
* Technique: CMR
* Capacity: 20TB (9x 2,2 TB Platters)
* Format (Sector size bytes) 4Kn: 4096, 512e: 512
* Areal Density: 1131 Gbits/sq. in, max
Performance
* Data buffer: 512 MB
* Rotational speed: 7200 RPM
* Latency average: 4.16 ms
* Interface transfer rate: 600 MB/s max
* Sustained transfer rate: 269/257 MB/s max
Acoustics
* Idle/Operating: 2.0/3.2 Bels, typical
Power
* Requirement +5 VDC, +12VDC
* Operating: 7.0 / 6.9 W
* Idle: 6.1 / 5.8 W
* Power consumption efficiency at idle: 0.305 / 0.29 W/TB
Physical Size
* Z-height (mm) 26.1
* Dimensions (width x depth): 101.6 (+/-0.25) x 147 mm
* Weight: 690 g
Reliability
* Error rate (non-recoverable bits read): 1 in 10
* Load/Unload cycles (at 40°C): 600,000
* Availability (hrs/day x days/wk): 24x7
* MTBF Rating: 2.5 M hours, projected
* Annualized Failure Rate (AFR, projected) 0.35%
* Workloads: Up to 550 TB/year
* Limited Warranty: 5 years