Parameters of WDC WD20EFZX-68AWUN0 with Firmware 81.00A81

General information
TrademarkWestern digital
ModelWDC WD20EFZX-68AWUN0
Capacity1.8 TB
InterfaceSATA
SATA version3.1
Form-factor3.5"
Firmware81.00A81
Alternative firmwares1
Firmware upgradesupported
ATA versionACS-3
Advanced Formatsupported
Units tested1
Times tested1
Performance
Maximum interface speed600 MB/s
Maximum buffered read speed443 MB/s
Maximum read speed184 MB/s
Minimum average access time15.96 msec
Volatile write cachesupported
Read look-aheadsupported
Command Queuing Optimization (NCQ)supported
Advanced Power Management (APM)not supported
Acoustic Management (AAM)not supported
Rotation rate5400 rpm
Reliability
Count of sensors17
Free-fall Controlnot supported
SMART Command Transport (SCT)supported
Duration of full self test227 minutes
Critical maximum temperature85°C (185°F)
Recommended maximum temperature65°C (149°F)
Maximum temperature32°C (89°F)
Average maximum temperature32°C (89°F)
Security
Drive access restrictionsupported
Enhanced security erasesupported
Data destruction time232 minutes
Instant data destructionnot supported
Host protected area (HPA)not supported
Trusted computingnot supported