WD Ultrastar DC HC550 WUH721818ALE6L4
Hard drive | 18 TB | internal | 3.5" | SATA 6Gb/s | 7200 rpm | buffer: 512 MB
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MPN
0F38459
Manufacturer
Western Digital
QuickCode
1501347
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Total stock
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£11,999.99
inc VAT
£9,999.99 ex
VAT
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Main Specification
| 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 | 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) |
| Dimensions (WxDxH) | 101.6 mm x 147 mm x 26.1 mm |
| Weight | 690 g |
| Manufacturer Warranty | 5-year warranty |
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 |
Product features
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.Key selling points
- 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
References
MPN: 0F38459
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