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Silver 3.5 inch bare hard drive with green circuit board visible

Seagate

Seagate ST3250823NS 250GB 7200 RPM 8MB SATA 1.5Gb/s 3.5" internal hard drive

SKU CH-2JSM-3YF7P MPN ST3250823NS

A 250GB 7200 RPM desktop drive with 8MB cache and SATA 1.5Gb/s interface, built for server workloads

  • PackagingBare Drive
  • InterfaceSATA 1.5Gb/s
  • Capacity250GB
  • NAND Flash Memory TypeHard Drive
  • RPM7200 RPM
  • Cache8MB
  • 250 GB capacity stores operating systems and data files
  • 7200 RPM spindle speed reduces average seek time to 8 ms
  • 8 MB cache buffers bursts for smoother throughput
  • SATA 1.5 Gb/s interface connects to legacy desktop and server boards
  • Nearline-class features include workload management and error recovery control

250GB Nearline Drive for Servers

The Seagate NL35 ST3250823NS is a 3.5-inch internal hard drive with 250GB capacity, 7200 RPM spindle speed and an 8MB cache. It connects via a SATA 1.5Gb/s interface and is supplied as a bare drive. Nearline-class reliability features include Workload Management, Error Recovery Control, One-Step Microcode Download and Write Same support.

Suits Always-On Storage Arrays

This drive targets server deployments that demand continuous operation and consistent error handling. Builders needing higher capacities, faster SATA revisions or solid-state performance should look at other options. The 1.5Gb/s link also limits throughput for modern RAID controllers that expect 3Gb/s or 6Gb/s signalling.

SATA 1.5Gb/s Interface Determines Fit

The single specification that decides compatibility is the SATA 1.5Gb/s interface. Controllers or backplanes that only negotiate at 3Gb/s or 6Gb/s will fall back to this speed, but systems requiring a native 3Gb/s or 6Gb/s handshake will not recognise the drive at its rated performance.

Highlights

  • 250 GB capacity stores operating systems and data files
  • 7200 RPM spindle speed reduces average seek time to 8 ms
  • 8 MB cache buffers bursts for smoother throughput
  • SATA 1.5 Gb/s interface connects to legacy desktop and server boards
  • Nearline-class features include workload management and error recovery control

Specifications

BrandSeagate
SeriesNL35
ModelST3250823NS
PackagingBare Drive
InterfaceSATA 1.5Gb/s
Capacity250GB
NAND Flash Memory TypeHard Drive
RPM7200 RPM
Cache8MB
Average Seek Time8ms
Average Write Time9ms
Average Latency4.16ms
FeaturesNearline-class reliability
Workload Management
Error Recovery Control
One-Step Microcode Download
Write Same
UsageIdeal for Servers
Form Factor3.5"
Shipping weight0.68 kg
Package size203 × 152 × 51 mm

Questions about this item

What maximum throughput does the SATA 1.5Gb/s interface cap in practice?

The SATA 1.5Gb/s interface limits the maximum theoretical bandwidth, so sustained reads and writes cannot exceed that ceiling even though the platters spin at 7200 RPM.

What physical space and mounting does the 3.5" form factor need?

The drive fits a standard 3.5" drive bay and uses the usual four side or bottom mounting holes for secure installation in a server or desktop chassis.

How is the bare drive installed and what step is often missed?

Connect the SATA data and power cables, secure the drive with screws, then ensure the system BIOS or RAID controller detects the 250GB capacity before partitioning.

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