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Silver 3.5 inch internal hard drive with circuit board visible on underside

Synology Inc.

Synology Inc. HAT3320-8T 8TB 3.5" internal hard drive

SKU CH-PH6M-CCVPF MPN HAT3320-8T

An 8 TB, 3.5-inch CMR drive built for 24/7 NAS duty with 7200 RPM, 512 MB cache and SATA 6.0Gb/s

  • Capacity8TB
  • RPM7200 RPM
  • InterfaceSATA 6.0Gb/s
  • Cache512MB
  • Form Factor3.5"
  • UsageFor NAS systems

Options 8TB

  • Built for 24/7 NAS operation with 1.2 million hours MTBF
  • Handles heavy multi-user loads with 300 TB/year workload rating
  • Consistent write performance from 100% CMR technology
  • Firmware updates applied directly through DSM without drive removal
  • 512 MB cache and 7200 RPM speed on SATA 6.0Gb/s interface

Purpose-built NAS drive

The Synology Plus Series HAT3320-8T is an 8 TB, 7200 RPM, 3.5-inch internal hard drive designed for 24/7 operation in Synology NAS systems. It uses conventional magnetic recording technology and a 512 MB cache to deliver consistent write performance across a 300 TB per year workload rating. Home and small-office users gain a drive validated for multi-user environments.

Verify compatibility

Confirm your NAS accepts 3.5-inch SATA 6.0 Gb/s drives and that a free drive bay with appropriate power and data connectors is available. The drive is tuned for Synology DSM firmware updates, so full integration benefits require a compatible Synology system running DSM. Buyers using third-party enclosures or non-Synology RAID controllers will not receive automated firmware maintenance.

DSM integration benefits

Firmware patches apply directly through DSM without removing the drive, reducing downtime during maintenance. Synology reports up to 27 percent faster sequential writes versus similar-class third-party drives due to combined firmware and OS-level optimisations. The 1.2 million hours MTBF and 500 000 hours of validation testing reflect the drive's alignment with the Synology ecosystem rather than generic desktop use.

Highlights

  • Built for 24/7 NAS operation with 1.2 million hours MTBF
  • Handles heavy multi-user loads with 300 TB/year workload rating
  • Consistent write performance from 100% CMR technology
  • Firmware updates applied directly through DSM without drive removal
  • 512 MB cache and 7200 RPM speed on SATA 6.0Gb/s interface

Specifications

BrandSynology
SeriesPlus Series
ModelHAT3320-8T
Capacity8TB
RPM7200 RPM
InterfaceSATA 6.0Gb/s
Cache512MB
Form Factor3.5"
UsageFor NAS systems
Shipping weight0.73 kg
Package size152 × 102 × 25 mm

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Questions about this item

Does the Synology HAT3320-8T ship with mounting screws or cables, or must they be purchased separately?

The drive is supplied as a bare 3.5" unit; mounting screws and SATA data or power cables are not included and must be sourced separately.

Is the 8 TB Plus Series model the only capacity available, or are other sizes offered in the same series?

The HAT3320 Plus Series is available in multiple capacities; the 8 TB version provides 7200 RPM speed, 512 MB cache and a 300 TB/year workload rating.

What does the 27% faster sequential write figure mean for everyday NAS workloads?

Firmware and DSM optimisations deliver up to 27% faster sequential writes versus comparable third-party drives, improving large-file transfers and multi-user access.

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