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Western Digital Ultrastar DC HC555 20TB Enterprise SATA HDD – 7200 RPM, 512MB Cache, CMR with ePMR, Triple-Stage Actuator, 9-Disk HelioSeal Platform, 550TB/yr Workload Rating & Rotational Vibration Safeguard (RVS)

Western Digital Ultrastar DC HC555 20TB enterprise SATA hard drive with HelioSeal technology, 7200 RPM, 512MB cache, and Triple-Stage Actuator
Western Digital Ultrastar DC HC555 20TB enterprise SATA hard drive with HelioSeal technology, 7200 RPM, 512MB cache, and Triple-Stage Actuator
Western Digital Ultrastar DC HC555 20TB enterprise SATA hard drive with HelioSeal technology, 7200 RPM, 512MB cache, and Triple-Stage Actuator
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Western Digital Ultrastar DC HC555 20TB enterprise SATA hard drive with HelioSeal technology, 7200 RPM, 512MB cache, and Triple-Stage Actuator
Western Digital Ultrastar DC HC555 20TB enterprise SATA hard drive with HelioSeal technology, 7200 RPM, 512MB cache, and Triple-Stage Actuator
Western Digital Ultrastar DC HC555 20TB enterprise SATA hard drive with HelioSeal technology, 7200 RPM, 512MB cache, and Triple-Stage Actuator
Tags: Western Digital , Ultrastar DC HC500 Series , Ultrastar DC HC555 , 0B48724 , 20TB , Enterprise HDD , SATA 6Gb/s , 7200 RPM , 512MB Cache , CMR , ePMR , HelioSeal , Triple-Stage Actuator , RVS
Western Digital Ultrastar DC HC555 20TB Enterprise SATA HDD – 7200 RPM, 512MB Cache, CMR with ePMR, Triple-Stage Actuator, 9-Disk HelioSeal Platform, 550TB/yr Workload Rating & Rotational Vibration Safeguard (RVS)
  • Stock: Coming Soon
  • Model: Ultrastar DC HC555 20TB
  • MPN: WUH722020CLE6L4
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Shiping Information
Nationwide shipping across Egypt. Fees confirmed by phone before shipping.

Description

Core Identifiers & System Classification
  • Brand / Series: Western Digital Ultrastar® DC HC500 Series
  • Model Name: Ultrastar DC HC555 (Data Center Hard Drive)
  • Part Number (P/N): 0B48724
  • Manufacturer Model Number (MDL): WUH722020CLE6L4
  • Firmware (FW): DE0
  • Form Factor: 3.5-inch Enterprise LFF (Large Form Factor)
Capacity & Performance Specs
  • Formatted Capacity: 20TB (Massive storage density for high-volume data hoarding, NAS arrays, and enterprise backups)
  • Interface: SATA 6Gb/s (Features Legacy Pin 3 configuration for broad compatibility)
  • Rotational Speed: 7,200 RPM
  • Cache / Buffer: 512 MB (Massive cache size to handle heavy, randomized enterprise workloads and burst transfers)
  • Maximum Sustained Data Transfer Speed: Up to 285 MB/s
  • Sector Format: 512e (Advanced Format)
Architecture & Core Technologies
  • Recording Technology: Conventional Magnetic Recording (CMR) with ePMR (Energy-Assisted Perpendicular Magnetic Recording) (Guarantees consistent, high-speed write performance without the severe rebuild slowdowns associated with SMR drives)
  • Actuator Technology: Triple-Stage Actuator (TSA) (Provides ultra-precise head positioning for accurate tracking on high-density platters)
  • Platter / Disk Platform: 9-disk Helium-sealed platform (HelioSeal® technology) (Reduces internal friction, lowers power consumption, and allows for 9 platters in a standard 26.1mm thickness)
  • Vibration & Shock Protection: Rotational Vibration Safeguard (RVS) with dual sensors and Dynamic Fly Height technology (Crucial for maintaining performance and drive health when mounted in dense, multi-drive server racks or NAS enclosures vibrating against one another)
Electrical & Environmental Ratings
  • DC Input Voltage: +5VDC @ 0.75A / +12VDC @ 0.65A
  • Power Draw: ~6.4W (Active) / ~5.3W (Idle) (Highly power-efficient for a 20TB 7200RPM drive thanks to the helium-sealed design)
  • Annual Workload Rating (WLR): 550 TB/year (Designed to be written to and read from 24/7/365 without premature degradation)
  • Mean Time Between Failures (MTBF): 2.5 Million Hours
  • Security Rating: Standard SE (Standard Erase / Base Model without Self-Encryption)

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