WUH721816ALN604 | Dell PowerEdge Gen15 Tray Included
The Western Digital Ultrastar DC HC550 WUH721816ALN604 is a high-capacity enterprise-class hard drive designed for data centers, enterprise servers, virtualization platforms, cloud storage deployments, and mission-critical storage environments. Featuring 16TB of storage capacity, 7200 RPM performance, and a SATA 6Gb/s interface, this drive delivers exceptional reliability, performance, and storage density for demanding workloads.
This listing includes a Dell PowerEdge Gen15 3.5" LFF Hot-Swap Tray, making it ready for deployment in compatible Dell PowerEdge servers.
Key Features
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Manufacturer: Western Digital (WD)
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Series: Ultrastar DC HC550
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Model: WUH721816ALN604
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Related Part Numbers: 0F38353, 0F38477
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Capacity: 16TB
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Interface: SATA III 6Gb/s
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Form Factor: 3.5" Large Form Factor (LFF)
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Rotational Speed: 7200 RPM
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Cache: 512MB
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Recording Technology: CMR (Conventional Magnetic Recording) with EAMR
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Sector Format: 4Kn (4K Native)
- HelioSeal® Helium-Filled Design
- Enterprise-Class Reliability
- 24x7 Continuous Operation
- Dell PowerEdge Gen15 Tray Included
Enterprise Performance Specifications
- Sustained Transfer Rate: Up to 262 MB/s
- Average Latency: 4.16 ms
- Interface Transfer Rate: Up to 600 MB/s
- MTBF: 2.5 Million Hours
- Annualized Failure Rate (AFR): 0.35%
- Workload Rating: Up to 550TB Per Year
- Load/Unload Cycles: 600,000
Advanced Enterprise Technologies
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HelioSeal® Technology for reduced power consumption and improved reliability
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Energy-Assisted Magnetic Recording (EAMR) for increased storage density
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Triple-Stage Actuator (TSA) for improved head positioning accuracy
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Rotational Vibration Safeguard (RVS) for enhanced performance in multi-drive environments
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Media Cache Plus Technology for optimized read/write operations
- Built for high-density enterprise storage applications
Dell PowerEdge Server Compatibility
Includes a Dell PowerEdge Gen15 3.5" Hot-Swap Drive Tray and is ideal for compatible Dell PowerEdge servers, including:
- PowerEdge R650xs
- PowerEdge R750
- PowerEdge R750xs
- PowerEdge R550
- PowerEdge T550
- Other Dell PowerEdge Gen15 platforms utilizing 3.5" LFF drive bays
This drive may also be compatible with certain Gen14 systems depending on controller and firmware support.
RAID Controller Compatibility
Supported Controllers
- Dell PERC H730
- Dell PERC H740P
- Dell PERC H755
- Dell PERC H345
- Dell PERC H355
- LSI / Broadcom 9300 Series
- LSI / Broadcom 9400 Series
- LSI / Broadcom 9500 Series
Not Recommended
- Dell PERC H310
- Dell PERC H710
- Dell PERC S140
- Dell PERC S150
Because this drive uses a 4Kn (4K Native) format, older RAID controllers may not properly recognize or configure the drive.
Operating System Compatibility
Supported on modern operating systems that support 4Kn drives:
- Windows Server 2012 and newer
- Windows 10 / Windows 11
- VMware ESXi 6.7+
- Proxmox
- Ubuntu 16.04+
- RHEL / CentOS 7.6+
- TrueNAS Core / Scale
- Unraid
Important 4Kn Drive Notice
This is not a standard 512e hard drive.
The WUH721816ALN604 ships configured as a 4Kn (4K Native) enterprise drive:
- Physical Sector Size: 4096 Bytes
- Logical Sector Size: 4096 Bytes
- Designed for enterprise servers and storage platforms
Please verify that your operating system, RAID controller, HBA, or storage platform supports 4Kn drives before purchase.
Power Disable (PWDIS) Information
This enterprise drive supports SATA Pin 3 Power Disable (PWDIS) technology.
- Fully supported in modern Dell PowerEdge servers and enterprise backplanes.
- When connected to certain desktop systems or legacy power supplies, the drive may not power on if 3.3V is present on SATA Pin 3.
- Enterprise server environments typically do not experience this issue.
Physical Specifications
- Height: 26.1 mm
- Width: 101.6 mm
- Depth: 147 mm
- Weight: Approximately 690g (1.52 lbs)
Package Includes
- Western Digital Ultrastar DC HC550 16TB HDD
- Model: WUH721816ALN604
- Dell PowerEdge Gen15 3.5" LFF Hot-Swap Drive Tray
Please Verify Compatibility Before Purchase
This is an enterprise-grade 4Kn SATA hard drive intended for compatible Dell PowerEdge servers, enterprise storage systems, and modern RAID/HBA controllers. If you are unsure about compatibility, please provide your server model and RAID controller information before purchasing.
