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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.

Points forts

  • 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

Caractéristiques

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Questions sur cet article

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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