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Silver 3.5 inch bare hard drive with IDE connector

Seagate

Seagate SV35.2 ST3250820AV 250GB 7200 RPM 8MB IDE 3.5" internal hard drive

SKU CH-Z1HC-VZGMP MPN ST3250820AV

250 GB 3.5" IDE hard drive with 7200 RPM and 8 MB cache, built for 24/7 surveillance recording

  • PackagingBare Drive
  • InterfaceIDE Ultra ATA100 / ATA-6
  • Capacity250GB
  • RPM7200 RPM
  • Cache8MB
  • Average Latency4.16ms
  • Optimised for 24/7 video surveillance with 1,000,000+ hour MTBF
  • 250GB capacity stores multiple simultaneous camera streams
  • 7200 RPM spindle speed delivers 14ms write-seek performance
  • 8MB cache ensures smooth data transfers with minimal bottlenecking
  • IDE Ultra ATA100 interface provides up to 100 MB/s throughput

250 GB IDE surveillance drive

The Seagate SV35.2 ST3250820AV is a 250 GB 3.5 inch internal hard drive built for continuous video recording. Its 7200 RPM spindle speed and 8 MB cache support multiple simultaneous write streams in 24/7 surveillance systems. The bare-drive packaging suits installers replacing drives in existing DVR appliances.

IDE Ultra ATA100 throughput ceiling

The Ultra ATA100 interface caps burst transfer at 100 MB/s, which limits sustained write bandwidth compared with modern serial interfaces. Average latency sits at 4.16 ms and write seek time is 14 ms, so heavy multi-camera loads may saturate the bus before the platters become the bottleneck.

1,000,000 hour MTBF rating

The manufacturer targets a mean time between failures of 1,000,000 hours under constant high-write duty cycles. That endurance figure is the primary indicator of whether the drive matches a recorder’s reliability requirements.

Highlights

  • Optimised for 24/7 video surveillance with 1,000,000+ hour MTBF
  • 250GB capacity stores multiple simultaneous camera streams
  • 7200 RPM spindle speed delivers 14ms write-seek performance
  • 8MB cache ensures smooth data transfers with minimal bottlenecking
  • IDE Ultra ATA100 interface provides up to 100 MB/s throughput

Specifications

BrandSeagate
SeriesSV35.2
ModelST3250820AV
PackagingBare Drive
InterfaceIDE Ultra ATA100 / ATA-6
Capacity250GB
RPM7200 RPM
Cache8MB
Average Latency4.16ms
FeaturesImportant Warranty Information
This product is end-of-sale and no longer warranted by the manufacturer. Instead, warranties this product for one year from date of purchase. If you require warranty service after thirty days, please contact Customer Service, not the manufacturer.
Multiple data streams can be written at once, allowing you to link multiple cameras to the same drive
Video read/write profiles allow greater control over operation
Spin-down feature and PowerOn control allow for cooler operation and power savings
Applications
Digital video surveillance systems
Digital video s
Form Factor3.5"
Shipping weight1.36 kg
Package size203 × 152 × 51 mm

Questions about this item

Is the 250 GB capacity the only option in the SV35.2 line?

The SV35.2 series includes other capacities, but this model ST3250820AV is supplied as a single 250 GB drive.

What does the 7200 RPM spindle speed deliver in a DVR or NVR?

7200 RPM and a 14 ms write-seek time give fast, consistent throughput for recording multiple simultaneous video streams.

How fast can the Ultra ATA 100 / ATA-6 interface actually move data?

The interface is rated for up to 100 MB/s burst throughput, which caps real-world sustained transfer below that figure.

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