WD Ultrastar DC HC550 WUH721818ALE6L4 - Hard drive - 18 TB - internal - 3.5" - SATA 6Gb/s - 7200 rpm - buffer: 512 MB
- 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
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Product Specification
- Product Code
- H44333627
- Manufacturer Ref
- 0F38459
- Barcode
- 8717306633338
- Hard Drive Type
- Internal
- Capacity
- 18TB
- Brand
- Western Digital
- Interface
- SATA
Product Details
- WD Ultrastar DC HC550 WUH721818ALE6L4 - Hard drive - 18 TB - internal - 3.5" - SATA 6Gb/s - 7200 rpm - buffer: 512 MB
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.
- 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. - 2.5M hours MTBF and 0.35% AFR
Unsurpassed reliability rating for Capacity Enterprise HDD for fewer failures/less service needs.
Specifications
General | |
---|---|
Device Type | Hard drive - internal |
Capacity | 18 TB |
Form Factor | 3.5" |
Interface | SATA 6Gb/s |
Buffer Size | 512 MB |
Features | Rotational Vibration Safeguard (RVS), HelioSeal, Conventional magnetic recording (CMR), Media Cache Plus, Two-Dimensional Magnetic Recording (TDMR), Energy-Assisted Magnetic Recording (EAMR), Triple State Actuator (TSA) |
Width | 101.6 mm |
Depth | 147 mm |
Height | 26.1 mm |
Weight | 690 g |
Performance | |
Drive Transfer Rate | 600 MBps (external) |
Internal Data Rate | 262 MBps |
Average Latency | 4.16 ms |
Spindle Speed | 7200 rpm |
Reliability | |
MTBF | 2,500,000 hours |
24x7 Operation | Yes |
Non-Recoverable Errors | 1 per 10^15 |
Load / Unload Cycles | 600,000 |
Expansion & Connectivity | |
Interfaces | 1 x SATA 6 Gb/s |
Compatible Bay | 3.5" |
Power | |
Power Consumption | 6.5 Watt (typical) ¦ 5.6 Watt (idle) |
Manufacturer Warranty | |
Service & Support | Limited warranty - 5 years |
Environmental Parameters | |
Min Operating Temperature | 5 °C |
Max Operating Temperature | 60 °C |
Min Storage Temperature | -40 °C |
Max Storage Temperature | 70 °C |
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 |