Seagate Momentus 5400.7 - 400GB 5400RPM SATA II 3Gb/s 8MB Cache 2.5" 9.5mm Laptop Hard Drive - ST9400321AS
The Seagate ST9400321AS has been Discontinued. Replacement option is the ST500LM030.
| Condition | Refurbished |
|---|---|
| Warranty | 90 Day Warranty |
| Availability | Yes - Ships in 1 to 2 Days |
| Manufacturer | Seagate Technology |
|---|---|
| Model | ST9400321AS |
| Series | Seagate Momentus 5400.7 |
| UPC Code | Does Not Apply |
Seagate Momentus 5400.7 Hard Drives
Durable Mobility Anywhere, Anytime -Â With fourth-generation perpendicular magnetic recording technology and capacities up to 640 GB, the Seagate Momentus 5400.7 drive offers the best combination of performance, capacity, mobility and durability in a laptop hard drive. The Momentus 5400.7 drive offers a fast SATA 3Gb/s interface plus an 8-MB cache, making the drive ideal for mainstream laptops, workstations, gaming laptops and personal external storage.
G-Force Protection - When a laptop is dropped, the most  catastrophic damage to the hard drive occurs when the head scrapes across the surface of the disk, causing potential data loss. The G-Force Protection feature, an optional drop sensor, protects the Momentus 5400.7 drive against shock by sensing when the system is in a free-fall state, moving the heads off the platter and locking them in place—all within three-tenths of a second.
   Key Advantages
- 8-MB cache delivers fast performance.
- Robust design and high shock tolerance enable mobility in rugged operating environments.
- 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.
- Green features:
  – Leverages Seagate laptop power management technology
  – 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.
- High instantaneous (burst) data transfer rates up to 3 Gb/s.
   Best-Fit Applications
- Mainstream Laptops
- External Storage Solutions/Boxes
- Notebooks
- Industrial Applications
- Small Form factor Desktops
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Product Specs
| Capacity | 400 GB |
|---|---|
| Spindle Speed | 5400 RPM Fluid Dynamic (FDB) Motor |
| Cache Buffer | 8 MB Intelligent Caching |
| Advanced Format | No |
| Form Factor | 2.5 Inch Internal Hard Drive |
| Interface | SATA II 3Gb/sec (Generation 2) |
| Interface Speed | 3Gb/sec - Data Transfer Rate (max) Buffer to Host |
| Data Transfer Rate | up to 118MB/sec Host to/from Drive (Sustained) |
| Interface Connector | SATA (7-Pin Signal and 15-Pin Power Connector) |
| Recording Technology | Perpendicular Magnetic Recording (PMR) Technology |
| Life Expectancy | 600,000 Hours MTTF (Mean Time To Failures) |
| Workload Rating | < 55 TB/yr (Workload Rate Limit) / 600,000 (Load/Unload Cycles) |
| Shock Resistance | Operating: 350Gs (2ms) / Non Operating: 1000Gs (1ms) |
| Encryption | No |
| Rohs Compliant | Yes |
| Dimensions | (L x W x H) 100.35mm x 69.85mm x 9.5mm |
| Classification | Mainstream Drives |
Key Features
- Capacities up to 640GB
- 5400 RPM Rotational Speed Motor
- SATA II 3Gb/s Interface
- Low Power Consumption
- Read Multiple and Write Multiple Command Support
- Whisper Quiet with Fluid Dynamic Bearing (FDB) Motors
- Native Command Queuing (NCQ) Technology
- Full-track Multiple-Sector Transfer Capability
- State-of-the-Art Cache and On-the-Fly Error-Correction Algorithms
- Staggered Spin-up Technology
- NoiseGuards Technology
- SilentSeek Technology
- Perpendicular Magnetic Recording (PMR) Technology
- QuietStep Ramp Load Technology
- Seagate SmartAlign Technology