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WD 4TB 3.5" RE4-GP EP500M Hard Drive for 6 or 12TB WD Sentinel DX4000 Small Office Storage Server

B&H # WEWDBYBL0040 Mfr # WDBYBL0040HNC-NASN
No Longer Available
Product Highlights
  • 3.5" Form Factor
  • SATA 6Gb/s Interface
  • 64MB Data Buffer Cache
  • 6Gb/s Max. Interface Transfer Rate
  • IntelliPower - Power Saving, Performance
  • Active Power Management
  • RAID-Specific Error Recovery
  • Perpendicular Magnetic Recording

The 4TB 3.5" RE4-GP EP500M Hard Drive for 6 or 12TB WD Sentinel DX4000 Small Office Storage Server from WD is an enterprise-class drive that expands or partially replaces the storage capacity of your WD Sentinel DX4000 Small Office Storage Server. It's compatible with the 6TB and 12TB versions of the DX4000. The drive has 4TB of data storage capacity. It utilizes a SATA 6Gb/s connection to deliver theoretical maximum interface speeds of 6Gb/s. The drive also has a 64MB data buffer.

The RE4-GP EP500M features IntelliPower, a fine-tuned balance of spin speed, transfer rate, and caching algorithms that provides significant power savings and helps ensure solid performance. Active Power Management automatically switches to idle mode whenever possible to further minimize power consumption. The drive has RAID-specific time-limited error recovery, which safeguards against drive fallout resulting from the extended hard drive error-recovery processes common to desktop drives. Perpendicular Magnetic Recording (PMR) gives the drive greater areal density.

Data Storage Capacity
This drive with 3.5" form factor has 4TB of storage space to expand or partially replace the capacity of your 6TB or 12TB WD Sentinel DX4000 Small Office Storage Server
Performance
Utilizes a SATA 6Gb/s connection to allow theoretical interface speeds of up to 6Gb/s. Drive has a 64MB data buffer. Dual processors and increased areal density provided by Perpendicular Magnetic Recording (PMR) boost speed. All told, the RE4-GP EP500M demonstrates up to a 25% performance improvement over the previous-generation drive. Rotary Acceleration Feed Forward (RAFF) optimizes operation and performance when the drive is utilized in vibration-prone multi-drive systems, such as rack-mounted servers
Reliability
RAID-specific time-limited error recovery (TLER) safeguards against drive fallout resulting from the extended hard drive error-recovery processes common to desktop drives. StableTrac secures the motor shaft at both ends to minimize system-induced vibration and stabilize platters for accurate tracking in read and write operations. Advanced mechanical optimizations along with system characterization and validation have resulted in improved rotary vibration tolerance. NoTouch ramp load technology ensures that the recording head never touches the disk media, so there's less wear on the recording head and media, as well as improved drive protection in transit
Intelligent Design
IntelliPower, which has been improved, is a fine-tuned balance of spin speed, transfer rate, and caching algorithms that provides substantial power savings and helps ensure solid performance. Plus, WD GreenPower enables the drive to consume less current during start-up, which can help accelerate system readiness
Energy Efficiency
IntelliSeek, also improved, calculates optimum seek speeds to reduce unnecessary power consumption, noise, and vibration. Additionally, WD has improved its IntelliPark feature, which reduces power consumption by automatically unloading recording heads during idle to aerodynamic drag, and by disengaging read/write channel electronics. Active Power Management automatically switches to idle mode whenever possible to further minimize power consumption. Drive recovery time from idle mode is under 1 sec, making for seamless power management between the drive and host controller. Overall, power consumption is reduced as much as 40%
24x7 Availability
With a mean time between failures (MTBF) of 1.2 million hr, this drive is designed to be used 24/7 with no problems
Performance
Capacity 4.0 TB
Interface SATA 6.0 Gb/s
User Sectors per Drive 5,860,533,168
Max Areal Density Not specified by manufacturer
Drive Speed Not specified by manufacturer
Cache 64 MB
Load/Unload Cycles Not specified by manufacturer
Error Rate Not specified by manufacturer
Availability (hrs/day x days/wk) 24x7
General
Power Requirements 12 VDC, 300 mA (read/write)
Power dissipation:
Read/Write: 6.60 W
Idle: 4.91 W
Standby: 0.81 W
Sleep: 0.81 W
Environmental Requirements Operating:
Temperature: 41 to 131° F (5 to 55° C)
Shock: 65 G (2.0 ms)

Non-operating:
Temperature: -40 to 158° F (-40 to 70° C)
Shock: 300 G (2.0 ms)
Acoustics Idle: 24 dBA (average)
Seek Mode 0: 29 dBA (average)
Seek Mode 3: 25 dBA (average)
Dimensions (LxWxH) 5.8 x 4.0 x 1.1" (14.7 x 10.16 x 2.79 cm)
Weight 0.73 lb (0.33 kg)
WD 4TB 3.5" RE4-GP EP500M Hard Drive for 6 or 12TB WD Sentinel DX4000 Small Office Storage Server
  • Instructions Flyer
  • Limited 3-Year Warranty
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