Western Digital Ultrastar Hard Drive, 4TB, SATA III w/ 256MB Cache

MX73799 Ultrastar Hard Drive, 4TB, SATA III w/ 256MB Cache
MX73799 Ultrastar Hard Drive, 4TB, SATA III w/ 256MB Cache

Product Info

As the industry evolves to develop purpose-built solutions for growing data storage requirements, IT managers continue to rely on lower capacity drives that are economical to acquire, yet deliver quick and reliable data access for traditional data center applications. This Ultrastar DC HC310 is a low-capacity HDD, with 4TB or unformatted storage that helps address economic and access requirements of many traditional IT workloads.

The Ultrastar DC HC310 is designed for traditional storage and server applications as well as distributed and scalable computing, including block and file storage architectures, providing economical capacities, fast 7200 RPM performance and lower $/unit acquisition cost to help ease budget constraints.

Industry Leading 5 Year Limited Warranty

Every Ultrastar DC HC310 HDD is backed by an industry leading 5 year limited warranty.


  • 4TB Unformatted Capacity
    Lots of storage for large data sets, spreadsheets, data bases, media files, etc.
  • Sustained Transfer Rates
    up to 233MB/s for near SSD-like performance on large data transfers
  • Economical Capacity
    Helps address budget and access requirements
  • High Performance
    12% faster than the last gen Ultrastar 7K6000 HDDs
  • Drop-in Ready
    Designed for traditional storage and server applications
  • Excellent Random and Sequential Performance
    Designed and manufactured to provide excellent data performance in both situations

Suggested Applications / Environments:

  • Distributed File Systems, like Apache Hadoop®
  • Supports Big Data Analytics
  • Direct & Network Attached Storage (DAS & NAS)
  • RAID Arrays


Make and Model Western Digital Ultrastar Hard Drive, 4TB w/ 256MB Cache
Part Number 0B35950
Unformatted Capacity 4TB
Interface SATA III (6Gb/s)
Cache 256MB
Rotational Speed 7,200rpm
Seek Time Reads: 8.0ms
Writes: 8.6ms
Load/Unload Cycles 600,000
Error Rate 1 in 1015
Data Transfer Rates 512n: Up to 233MB/s
MTBF 2,000,000 Hours MTBF
Annual Failure Rate 0.44% AFR
Temperature Operating: 5 ~ 60° C
Storage: -40 ~ 70° C
Shock Resistance Operating: 70G @ 2ms
Non-Operating: 300G @ 2ms
Vibration Operating: 0.67G RMS (XYZ, 5 ~ 500Hz)
Non-Operating: 1.04G RMS (XYZ, 2 ~ 200Hz)
Acoustics Idle Mode: 2.9 Bels
Seek Mode: 3.6 Bels
Power Dissipation Operating: 7.0 Watts
Idle: 5.9 Watts
Dimensions 26.1 x 147.0 x 101.6mm
Weight 720g