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Black and grey stackable Thunderbolt enclosure with 3.5 inch drive bay

OWC

OWC 28TB (20TB HDD 7200 RPM, 8TB NVMe) Thunderbolt 3 Drive Enclosure

SKU CH-R8Q0-HSYSB

Stackable 28 TB enclosure with 20 TB 7200 RPM hard drive and 8 TB NVMe SSD adds three Thunderbolt ports and 96 W charging

  • Total capacity28 TB
  • Interface typeThunderbolt
  • Form factor3.5 in (8.89 cm)
  • Cache memory256 MB
  • Rotational speed7,200 RPM
  • Product colorBlack - Gray

Capacity 28TB

Cache 256MB

  • 28 TB total capacity with 20 TB 7200 RPM hard drive and 8 TB NVMe SSD
  • Up to 770 MB/s real-world throughput for 4K video editing and backups
  • Three Thunderbolt ports plus 96 W notebook charging from a single connection
  • Stackable aluminium chassis with internal heatsink and quiet fan for cool silent operation
  • Universal SATA bay and NVMe M.2 slot enable flexible storage expansion

Massive 28TB Storage for Creative Workflows

The OWC miniStack STX combines a 20TB 7200 RPM hard drive with an 8TB NVMe SSD in a single enclosure. It is built for photographers, video editors and developers who need local capacity for large libraries and active projects.

Stackable Aluminium Chassis

A 3.5-inch form factor matches the Mac mini footprint for a clean desktop stack. Three Thunderbolt 3 ports deliver 96W of notebook charging while supporting up to five Thunderbolt devices, three USB devices and two displays through a single cable.

Near-Silent Cooling and 770MB/s Real-World Speed

An internal aluminium heat sink and high-efficiency fan keep both drives cool during extended 4K editing sessions. The enclosure sustains up to 770MB/s transfer rates so backups and timeline scrubbing stay responsive without audible distraction.

How it compares

Measured against everything we stock in External Drive Enclosures, at today’s prices. Recalculated every night.

Price $2,638.99
Pricier than about 91% of the 821 comparable items (median $30.99).

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Specifications

Product
Total capacity28 TB
Product colorBlack - Gray
Performance
Rotational speed7,200 RPM
Storage
Cache memory256 MB
Ports & slots
Interface typeThunderbolt
Thunderbolt 3 supportYes
Size & build
Form factor3.5 in (8.89 cm)

Other versions of this model

1 more in the same range

Questions about this item

What Thunderbolt standard does the miniStack STX use, and what real-world throughput does it deliver?

It uses Thunderbolt 3 and reaches up to 770MB/s in real-world tests for 4K video editing and backups.

What drive bays does the enclosure provide, and which form factors fit?

A universal SATA bay for 3.5-inch drives and an NVMe M.2 PCIe SSD slot for additional capacity.

How is the miniStack STX installed, and what step is often missed?

Connect it via Thunderbolt 3 to the host, insert the drives into the SATA bay and M.2 slot, then attach the included power adapter; the step often missed is powering the unit before the host recognises the storage.

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