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Silver 3.5 inch internal hard drive rectangular metal casing

MaxDigitalData

MaxDigitalData MDD18TSATA25672DVR 18TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-E68T-S4T4D

An 18 TB, 7200 RPM SATA drive with 256 MB cache built for 24×7 surveillance recording

  • InterfaceSATA 6.0Gb/s
  • Capacity18TB
  • RPM7200 RPM
  • Cache256MB
  • Form Factor3.5"
  • Height (maximum)26.10mm
  • 18 TB capacity stores up to 18,000 hours of HD video
  • 7200 RPM and 256 MB cache enable smooth video recording and playback
  • Designed for 24×7 operation with 2.0 M hours MTBF and 0.44 % AFR
  • SATA 6.0 Gb/s interface works with desktop PC, Mac, RAID, NAS and CCTV DVR
  • 5 inch form factor fits standard drive bays at 26.10 mm height

Capacity & Purpose

The MaxDigitalData MDD18TSATA25672DVR is an 18TB 3.5-inch internal hard drive built for continuous 24×7 workloads. It targets surveillance systems, CCTV DVRs, NAS enclosures and desktop PCs that need high-capacity storage for constant video recording. The 7200 RPM spindle and 256MB cache support smooth multi-stream capture and playback.

SATA 6.0Gb/s Interface Limits

The drive connects via SATA 6.0Gb/s, capping sustained transfer rates at the bus maximum of 6.0 Gb/s. Mechanical latency and platter density determine real-world throughput, which will remain below the interface ceiling. The 26.10mm height fits standard 3.5-inch bays, but the bare-drive package includes no screws, cables or mounting hardware.

Upgrade Path & Value

This unit replaces lower-capacity surveillance drives or desktop HDDs when retention periods expand or camera counts grow. The jump is worthwhile when 24×7 reliability metrics matter: the 2.0M-hour MTBF and 0.44% AFR exceed typical desktop ratings. It is not suited for boot-duty SSDs, portable enclosures or systems that lack a 3.5-inch bay and SATA power.

Points forts

  • 18 TB capacity stores up to 18,000 hours of HD video
  • 7200 RPM and 256 MB cache enable smooth video recording and playback
  • Designed for 24×7 operation with 2.0 M hours MTBF and 0.44 % AFR
  • SATA 6.0 Gb/s interface works with desktop PC, Mac, RAID, NAS and CCTV DVR
  • 5 inch form factor fits standard drive bays at 26.10 mm height

Caractéristiques

BrandMaxDigtalData
SeriesMDD
ModelMDD18TSATA25672DVR
InterfaceSATA 6.0Gb/s
Capacity18TB
RPM7200 RPM
Cache256MB
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm

Questions sur cet article

Should I pick the 18TB model or a smaller capacity for my surveillance DVR?

The 18TB capacity stores up to 18,000 hours of HD video depending on the CCTV system, making it the highest single-drive option in this series.

What does the 7200 RPM speed deliver inside a running DVR or desktop?

7200 RPM provides fast sequential throughput for smooth 24×7 video recording and playback without frame drops.

How does the SATA 6.0Gb/s interface limit real-world transfer rates?

The SATA 6.0Gb/s link caps sustained reads and writes at the interface maximum, so the drive’s 256MB cache and 7200 RPM platters determine actual performance.

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