Seagate
Seagate Momentus 5400.6 ST9250315AS 250GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" laptop hard drive
2.5-inch SATA internal hard drive with 250 GB capacity, 5400 RPM speed and 8 MB cache for laptop storage upgrades
- PackagingBare Drive
- InterfaceSATA 3.0Gb/s
- Capacity250GB
- Cache8MB
- Average Latency5.6ms
- RPM5400 RPM
- 250 GB capacity stores large media libraries and documents
- 5400 RPM spindle speed delivers responsive everyday performance
- 8 MB cache buffer accelerates frequent data access
- SATA 3.0 Gb/s interface connects directly to laptop motherboards
- 1000 Gs non-operating shock rating protects data during transport
250 GB SATA laptop drive
The Seagate Momentus 5400.6 ST9250315AS is a 2.5 inch internal hard drive with 250 GB capacity and a 5400 RPM spindle. It connects through a SATA 3.0Gb/s interface and includes 8 MB of cache. The bare drive suits notebook upgrades or industrial installations where a standard height 9.5 mm form factor is required. Buyers who need higher capacities or faster interfaces should consider other options.
Thermals noise and power
QuietStep technology reduces acoustic output during data access for a quieter working environment. The 5400 RPM rotation speed generally limits heat generation compared with faster spindle drives. Average latency is 5.6 ms. No specific power-draw figures are supplied in the data.
Shock protection and recording tech
Perpendicular Magnetic Recording increases data density while reducing moving parts for enhanced reliability. The drive withstands up to 1000 Gs of non-operating shock, and G-Force Protection adds robustness in mobile environments. Ramp load technology removes the head from the disk surface during idle periods to further protect stored data.
Highlights
- 250 GB capacity stores large media libraries and documents
- 5400 RPM spindle speed delivers responsive everyday performance
- 8 MB cache buffer accelerates frequent data access
- SATA 3.0 Gb/s interface connects directly to laptop motherboards
- 1000 Gs non-operating shock rating protects data during transport
Specifications
| Brand | Seagate |
|---|---|
| Series | Momentus 5400.6 |
| Model | ST9250315AS |
| Packaging | Bare Drive |
| Interface | SATA 3.0Gb/s |
| Capacity | 250GB |
| Cache | 8MB |
| Average Latency | 5.6ms |
| RPM | 5400 RPM |
| Features | 1000 Gs of nonoperating shock make the drive ideal for notebook PCs and industrial applications. G-Force Protection feature available for added robustness in mobile environments Utilizes ramp load features that remove the head from the disk during idle periods, improving idle power consumption and adding to the durability of the drive QuietStep technology enables ultra-quiet load/unload acoustics. SATA 3Gb/s interface with Native Command Queuing Perpendicular recording technology |
| Form Factor | 2.5" |
| Height (maximum) | 9.5mm |
| Width (maximum) | 69.75mm |
| Length (maximum) | 100.3mm |
| Option | 30 DAY WARRANTY |
| Height | 30 DAY WARRANTY |
| Shipping weight | 0.10 kg |
| Package size | 102 × 71 × 13 mm |
Questions about this item
How do I install the 2.5" 9.5mm SATA drive in my laptop, and what step is often missed?
Slide the drive into the 2.5" bay, secure it with the four mounting screws, then attach the SATA data and power connectors; the step often missed is tightening the screws evenly so the 9.5mm height seats flush without stressing the connector.
What maintenance or replacement will the ST9250315AS need over time?
No routine maintenance is required; the 5400 RPM mechanism and 8MB cache are sealed, so the only future action is replacing the drive if SMART attributes report reallocated sectors or the 250GB capacity becomes insufficient.
What limit appears first during sustained transfers on this SATA 3.0Gb/s drive?
The 5400 RPM spindle speed and 8MB cache constrain sustained throughput well below the 3.0Gb/s interface ceiling, so mechanical latency becomes the bottleneck during long sequential reads or writes.
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