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Standard 3.5 inch internal hard drive with silver metal casing and green circuit board visible

Buffalo Technology

Buffalo Technology OP-HD2.0QH 2TB internal hard drive

SKU CH-5D48-JGZ27 MPN OP-HD2.0QH

2 TB SATA internal hard drive built in Japan for DriveStation Quad NAS with a three-year warranty

  • InterfaceSATA
  • Capacity2TB
  • FeaturesHard Drive
  • 2 TB capacity for large NAS storage
  • SATA 300 interface for broad desktop compatibility
  • 3-year limited warranty for long-term reliability
  • Internal form factor fits DriveStation Quad bays
  • Manufactured in Japan to Buffalo specifications

Purpose-built NAS replacement

This 2 TB internal hard drive is manufactured by Buffalo Technology specifically for DriveStation Quad enclosures. It serves as a direct spare or expansion drive for that platform and suits users who need a validated SATA disk for their existing Buffalo NAS system. The SATA/300 interface matches the original specification exactly.

Factory-validated integration

Each unit ships as a bare OEM drive without cables, brackets or software utilities. The value lies in Buffalo's pre-qualification process, which confirms mechanical and firmware compatibility with the DriveStation Quad chassis and RAID controller. Installers simply swap the drive and let the array rebuild without additional configuration steps.

Two terabytes of array capacity

The 2 TB volume adds a full drive's worth of protected storage to a four-bay enclosure running RAID 5 or RAID 6. Sequential throughput is bounded by the SATA/300 link, so sustained transfers top out around the interface ceiling. Workloads that demand higher IOPS or larger single volumes will exceed what this single spindle can deliver.

Highlights

  • 2 TB capacity for large NAS storage
  • SATA 300 interface for broad desktop compatibility
  • 3-year limited warranty for long-term reliability
  • Internal form factor fits DriveStation Quad bays
  • Manufactured in Japan to Buffalo specifications

Specifications

BrandBUFFALO
InterfaceSATA
Capacity2TB
FeaturesHard Drive
Shipping weight0.74 kg
Package size180 × 152 × 79 mm

Questions about this item

Will the 2 TB SATA drive need any firmware updates or bearing replacements during its service life?

The manufacturer provides a 3-year limited warranty covering defects, but no scheduled firmware updates or bearing replacements are specified for this model.

What throughput ceiling does the SATA/300 interface impose on sustained transfers?

The SATA/300 interface caps maximum sustained transfer rates at 300 MB/s, which becomes the bottleneck before the drive’s own media speed under heavy workloads.

How much heat and noise does the 2 TB internal drive produce when running continuously in a NAS enclosure?

Designed for DriveStation Quad NAS use, the drive operates within standard SATA desktop drive thermal and acoustic limits during all-day operation.

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