HGST MegaScale DC 4000.B, 4TB 0F19847 Data Sheet

Product codes
0F19847
Page of 2
Data Sheet
MegaScale DC
 4000.B
3.5-Inch Enterprise CoolSpin  
Hard Disk Drives
Highlights
24x7 accessibility for enterprise-class, 
capacity-optimized applications
800K hours MTBF
1
3-year limited warranty
4 terabytes
2
 of capacity
Advanced Format
3
 with 512-byte emulation (512e)
6Gb/s SATA interface
Dual Stage Actuator (DSA) and Enhanced 
Rotational Vibration Safeguard (RVS) for robust 
performance in multi-drive environments
Applications/Environments
Low application workload cloud storage
Massive Scale Out (MSO)
Data warehousing & mining
Disk-to-disk backup & archiving
Innovation to Support Low-workload Applications
The HGST MegaScale DC™ 4000.B is designed to meet the needs of the scale-out data center
where low-power, high-capacity, cost-effective storage is essential. MegaScale DC addresses
low application workloads that operate within 180TB per year. Typical low-workload
applications include multi-drive replicated environments, disk-to-disk backup and restore
snapshots, online archives, big data stores and long-term data retention that benefit from
low cost or energy usage.
Understanding Workload is Key 
HGST offers a comprehensive product portfolio to address the different workloads within
the data center so our customers can maximize their return. When selecting hard disk drives,
it’s important to consider the application workload. Workload is defined as the amount
of work stress the HDD can endure during normal operating conditions. To achieve high
storage density, components within the hard drive chassis move with precision. This
complex engineering requires that HDDs have an optimized design rated for a specific
usage time and workload range. Our products have the highest reliability ratings for the
rated workloads. To ensure optimal efficiency, it’s critical that data center managers make
informed decisions when selecting the right storage design with the right specifications for
the right application workload.
Minimizing Power Consumption
MegaScale DC drives leverage Advanced Power Management technology which offers five
levels of granularity to help manage power consumption including: normal idle; unload idle;
low RPM idle; standby; and sleep. The standby and sleep modes consume less than 1 watt,
enabling archival applications to remain online and ready to respond, yet at eco-friendly
power levels.
Application  
Workload Rating
Features and Benefits
Feature / Function
Benefits
Capacity
4TB in 5-disk design
Highest enterprise capacity availability in a single platform 
Performance
Rotational Vibration Safeguard (RVS) 
Maintains drive performance in high rotational vibration environments and multi-drive systems 
Reliability
Thermal Fly-height Control (TFC) 
with internal thermal sensor
Better soft error rate for improved reliability and performance
Head load/unload
Protects disk during non-operation
SMART command transport
Adaptive error correction
Power
CoolSpin™ Technology
Saves on power
Security
Bulk Data Encryption with  
Enhanced Secure Erase
Encrypt data, providing security and easy, safe redeployment
4TB | CoolSpin Technology  
SATA 6Gb/s