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WD Ultrastar DC HC550 WUH721818ALE6L4 - hard drive - 18 TB - SATA 6Gb/s
Hard drive
18 TB
internal
3.5"
SATA 6Gb/s
7200 rpm
buffer: 512 MB
Weight: 0.68 KG
- Industry's first Energy-Assisted Magnetic Recording technology
- Industry's first Triple Stage Actuator
- Leading HelioSeal technology
- Reliable, field-proven design across five generations
- HelioSeal design delivers power efficiency (Watts/TB)
- 2.5M hours MTBF rating
Similar Products
Overview
The breadth and depth of Big Data is driving the universal need for higher capacities across a broad spectrum of applications and workloads. Laying the foundation for a worry-free data center, Western Digital delivers the capacity to conquer the data explosion with the Ultrastar DC HC500 series of hard disk drives (HDDs). The DC HC500 series is designed for public and private cloud environments where storage density and cost-efficient infrastructure is critical. The 18TB Ultrastar DC HC550 HDDs are the first commercial implementation of Energy-Assisted Magnetic Recording technology and utilize the industry's first Triple Stage Actuator. These technologies, integrated with HelioSeal on a 9-disk platform, deliver the highest areal density and unmatched Total Cost of Ownership for customer and market needs.
Main Specifications
- Product Description
- WD Ultrastar DC HC550 WUH721818ALE6L4 - hard drive - 18 TB - SATA 6Gb/s
- Type
- Hard drive - internal
- Capacity
- 18 TB
- Form Factor
- 3.5"
- Interface
- SATA 6Gb/s
- Data Transfer Rate
- 600 MBps
- Buffer Size
- 512 MB
- Spindle Speed
- 7200 rpm
- Features
- Energy-Assisted Magnetic Recording (EAMR), Media Cache Plus, Rotational Vibration Safeguard (RVS), Triple State Actuator (TSA), Two-Dimensional Magnetic Recording (TDMR), Conventional magnetic recording (CMR), HelioSeal
- Dimensions (WxDxH)
- 101.6 mm x 147 mm x 26.1 mm
- Weight
- 690 g
- Manufacturer Warranty
- 5-year warranty
Associated Documents
Product Features
2
5M hours MTBF and 0. 35% AFR. Unsurpassed reliability rating for Capacity Enterprise HDD for fewer failures/less service needs.
18ТВ, enabled by EAMR
Provides 29% more capacity than 14TB helium-filled drives.
Ultra-low Watts per Terabyte (W/TB)
21% lower idle W/TB than 14TB Ultrastar helium-filled drives.
Triple Stage Actuator and Two-Dimensional Magnetic Recording (TDMR) technology
More accurate head positioning, especially in multi-drive environments, for better performance and data integrity.
Rotational Vibration Safeguard (RVS)
Maintains drive performance in high rotational vibration environments and multi-drive systems.
Media Cache Plus architecture
Better random write performance.
SATA 6Gb/s & SAS 12Gb/s
Provides compatibility with high-performance data centers.
512MB cache buffer
Improves response time and data management.
Dual Safe, RSA-signed firmware
Retains previous firmware version for safe firmware updates, verified with an RSA signature.
Specifications
Environmental Parameters
- Sound Emission
- 34 dBA
- Shock Tolerance (operating)
- 50 g @ 2 ms half-sine wave
- Shock Tolerance (non-operating)
- 250 g @ 2 ms half-sine wave
- Vibration Tolerance (operating)
- 0.67 g @ 5-500 Hz
- Vibration Tolerance (non-operating)
- 1.04 g @ 2-200 Hz
- Max Operating Temperature
- 60 °C
- Min Operating Temperature
- 5 °C
- Max Storage Temperature
- 70 °C
- Min Storage Temperature
- -40 °C
Performance
- Spindle Speed
- 7200 rpm
- Average Latency
- 4.16 ms
- Drive Transfer Rate
- 600 MBps (external)
- Internal Data Rate
- 262 MBps
Reliability
- MTBF
- 2,500,000 hours
- Non-Recoverable Errors
- 1 per 10^15
- 24x7 Operation
- Yes
- Load / Unload Cycles
- 600,000
Software / System Requirements
- OS Required
- Linux, Microsoft Windows Server, Microsoft Windows
Connections & Expansion
- Compatible Bay
- 3.5"
- Interfaces
- 1 x SATA 6 Gb/s
General
- Buffer Size
- 512 MB
- Form Factor
- 3.5"
- Weight
- 690 g
- Width
- 101.6 mm
- Depth
- 147 mm
- Height
- 26.1 mm
- Capacity
- 18 TB
- Device Type
- Hard drive - internal
- Interface
- SATA 6Gb/s
- Features
- Energy-Assisted Magnetic Recording (EAMR), Media Cache Plus, Rotational Vibration Safeguard (RVS), Triple State Actuator (TSA), Two-Dimensional Magnetic Recording (TDMR), Conventional magnetic recording (CMR), HelioSeal
Manufacturer Warranty
- Service & Support
- Limited warranty - 5 years
Miscellaneous
- Compliant Standards
- RoHS 2011/65/EU, RoHS 2015/863/EU, BSMI, ICES-003, NMB-003, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB Scheme, TUV, UL
Power
- Power Consumption
- 6.5 Watt (typical), 5.6 Watt (idle)