Seagate Momentus ST9250827AS 2.5" SATA 250GB 5.4K Hard Drive

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Seagate Part #/MPN: ST9250827AS

DiscTech Item #: SGT-ST9250827AS-RF-OE-DEL

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Capacity: 250GB

Speed: 5,400RPM

Interface Types: SATA

Form Factor: 2.5inx9mm Fits Most laptops

Sector Size: 512 / 512e

Sustained Throughput: 58

Average Seek Time: 12 / 14

Electrical Interface: SATA 300 - 3.0Gbps

On-Board Cache: 8MB

Seagate Momentus ST9250827AS 5400.4 SATA 250GB 5.4K 2.5"  Hard Drive - Refurbished OEM

    These drives provide the following key features:
  • 5,400-RPM spindle speed.
  • 8-Mbyte buffer.
  • Quiet operation. Fluid Dynamic Bearing (FDB) motor.
  • High instantaneous (burst) data-transfer rates (up to 150 Mbytes per second).
  • Perpendicular recording technology provides the drives with increased areal density.
  • State-of-the-art cache and on-the-fly error-correction algorithms.
  • Full-track multiple-sector transfer capability without local processor intervention.
  • 900 Gs nonoperating shock and 325 Gs of operating shock.
  • SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
  • The 3D Defense System™, which includes Drive Defense, Data Defense and Diagnostic Defense, offers the industry’s most comprehensive protection for disc drives.
  • Support for S.M.A.R.T. drive monitoring and reporting.
  • Support for Read Multiple and Write Multiple commands.
  • Worldwide Name (WWN) capability uniquely identifies the drive

Dell Part Numbers: KW721 0KW721

Drive specificationST9250827ASST9200827ASST9160827ASST9120817AS
Formatted Gbytes (512 bytes/sector)*250200160120
Guaranteed sectors488,397,168390,721,968312,581,808234,441,648
Bytes per sector512
Physical read/write heads432
Cache (Mbytes)8
Recording density in BPI (bits/inch max)1,180k
Track density TPI (tracks/inch max)173
Areal density (Gbits/inch max)204
Spindle speed (RPM)5,400
Internal transfer rate (Gbits/sec max)778
Sustained transfer rate (Mbytes/sec max)58
I/O data transfer rate (Mbytes/sec max)300
ATA data-transfer modes supportedSATA 1.0, Serial ATA Revision 2.5

PIO modes 0–4

Multiword DMA modes 0–2

Ultra DMA modes 0–6
Height (max)9.5 +/- 0.2 mm (0.374 +/- .0078 inches)
idth (max) 69.85 +/- .25 mm (2.750 +/- .010 inches)69.85 +/- 0.25 mm (2.75 +/- 0.0098 inches)
Length (max)100.20 +/- 0.25 mm (3.945 +/- 0.010 inches)
Weight (typical)</=102 grams (0.23 lb)97 grams (0.21 lb)
Average latency (msec)5.6
Power-on to ready (sec typical)<3.0
Standby to ready (sec typical)<2.0
Track-to-track seek time, read (msec typical)<2.0 (read), <2.5 (write)
Average seek, read (msec typical)<12.0
Average seek, write (msec typical)14.0
Startup current, +5V (max)1.0 amps

Click here to view the manufacturer's item description/brochure

ROHS Compliant

Alternate MPNs: KW721 0KW721

Weight: 0.5 lb

Warranty: 1 Year DiscTech


Condition Levels Explained

The product has been built, rebuilt or repaired at the original manufacturer's factory (Note we NEVER sell 3rd party repaired items, as we do not find them to be reliable enough). Often these products are extremely close to new in condition, except that they contain at least one recycled or repaired component. Failure rates are often lower on these devices since they have been far more thoroughly tested than new items. Watch a video about our refurbishing process

1 Year DiscTech Warranty

Product Warranties Explained

The product has a DiscTech warranty for the time period specified. View our limited warranty

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