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Silver 3.5 inch enterprise hard drive with SAS connector

Western Digital

Western Digital Ultrastar DC HC520 12TB SAS 12Gb/s 7200RPM 3.5" Enterprise HDD

SKU CH-NSQX-4S1J9

A 12 TB enterprise hard drive with a SAS 12 Gb/s interface, helium-weld design and 7200 RPM for 24/7 operation

  • 12TB capacity for massive data storage
  • SAS 12Gb/s interface for high-speed server connectivity
  • Helium-weld design enhances reliability and performance
  • Built for 24x7 enterprise operation
  • 512e advanced format with secure erase support

12 TB helium enterprise drive

The Western Digital Ultrastar DC HC520 is a 12 TB 3.5 inch hard drive built for 24x7 server workloads. A helium-welded enclosure reduces internal turbulence and helps sustain performance. It connects through a SAS 12 Gb/s interface and spins at 7200 RPM. The 512e sector format ensures compatibility with modern disk controllers.

Suited for RAID arrays and bulk storage

This drive targets administrators who need high-capacity, helium-sealed storage for continuous operation in enterprise arrays. It is not appropriate for systems that lack a SAS controller or for portable enclosures that require a smaller form factor. Workstations limited to consumer interfaces should consider other options.

SAS 12 Gb/s interface requirement

The single specification that decides fitment is the SAS 12 Gb/s connection; the drive will only function when the host provides a compatible SAS controller and backplane. Without that interface the unit cannot communicate with the system. Verify controller support before purchase.

Highlights

  • 12TB capacity for massive data storage
  • SAS 12Gb/s interface for high-speed server connectivity
  • Helium-weld design enhances reliability and performance
  • Built for 24x7 enterprise operation
  • 512e advanced format with secure erase support

Specifications

No published specifications for this item yet.

Questions about this item

What is the first limit reached under sustained 24x7 enterprise use?

The drive is optimized for 24x7 enterprise environments with a helium-weld design that supports continuous operation at 7200 RPM.

What noise, heat or power behaviour appears when the drive runs all day?

Helium-weld construction reduces internal turbulence, lowering acoustic output and operating temperature during extended 7200 RPM workloads.

Which controller interface must the system already provide for this drive to function?

A SAS 12Gb/s capable disk controller is required to connect the 12Gb/s SAS interface of this 3.5 inch drive.

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