Seagate
Seagate Cheetah NS ST3400755SSProduct 400 GB 3.5" SAS internal hard drive
- SLC
$23.99
0.00030606BTC
In stock
Seagate
Seagate ST3400633AS 400GB 7200 RPM 16MB SATA 3.0Gb/s 3.5" internal hard drive
A 400 GB 3.5-inch desktop drive spinning at 7200 RPM with 16 MB cache and a SATA 3.0Gb/s interface
- PackagingBare Drive
- InterfaceSATA 3.0Gb/s
- Capacity400GB
- RPM7200 RPM
- Cache16MB
- Average Latency4.16ms
- 400 GB capacity stores large server datasets
- 7200 RPM spindle speed delivers fast data access
- 16 MB cache buffers bursts for smoother throughput
- SATA 3.0 Gb/s interface with NCQ optimises command ordering
- 3-D Defense System protects platters from shock and vibration
Desktop 400GB SATA drive
The Seagate Barracuda 7200.9 ST3400633AS is a 3.5-inch internal hard drive built for desktop systems and server storage. It delivers 400GB capacity on a SATA 3.0Gb/s interface with 7200 RPM spindle speed and 16MB cache. The drive is supplied as a bare unit in new condition.
SATA 3.0Gb/s interface limits
The SATA 3.0Gb/s link caps theoretical throughput at 3.0 Gb/s, so sustained transfer rates cannot exceed that ceiling. Native Command Queuing helps optimise request ordering, but the interface remains the bottleneck for sequential workloads. Average latency sits at 4.16ms, reflecting the mechanical rotation.
400GB capacity and headroom
At 400GB the drive suits operating-system volumes, application libraries and modest data sets in server or desktop roles. The 16MB cache absorbs burst writes, yet heavy multi-user databases or large media archives will outgrow the available space. Buyers who need more storage should consider higher-capacity models.
Highlights
- 400 GB capacity stores large server datasets
- 7200 RPM spindle speed delivers fast data access
- 16 MB cache buffers bursts for smoother throughput
- SATA 3.0 Gb/s interface with NCQ optimises command ordering
- 3-D Defense System protects platters from shock and vibration
Specifications
| Brand | Seagate |
|---|---|
| Series | Barracuda 7200.9 SATA |
| Model | ST3400633AS |
| Packaging | Bare Drive |
| Interface | SATA 3.0Gb/s |
| Capacity | 400GB |
| RPM | 7200 RPM |
| Cache | 16MB |
| Average Latency | 4.16ms |
| Features | SATA 3Gb/s with NCQ 3-D Defense System RoHS Compliant |
| Usage | Ideal for Servers |
| Form Factor | 3.5" |
| Shipping weight | 0.74 kg |
| Package size | 203 × 152 × 51 mm |
Questions about this item
Is the 400GB capacity with 16MB cache the only version available for the ST3400633AS?
Yes, the ST3400633AS is offered only as a 400GB model with a 16MB cache and 7200 RPM spindle speed.
What does the 7200 RPM and 4.16ms latency mean for everyday server workloads?
The 7200 RPM spindle and 4.16ms average latency provide quick data access for typical server read and write tasks.
How does the SATA 3.0Gb/s interface with NCQ affect real-world throughput?
The SATA 3.0Gb/s link caps the maximum burst transfer rate at 3.0Gb/s, while NCQ optimises command ordering for better sustained performance.
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