Western Digital WD800AAJS 80GB SATA Hard Drive

Western Digital Part #/MPN: WD800AAJS

DiscTech Item #: WDC-WD800AAJS-NP-OE-DEL

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Capacity: 80GB

Speed: 7,200RPM

Interface Types: SATA

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: 126

Electrical Interface: SATA 300 - 3.0Gbps

On-Board Cache: 8MB

Western Digital WD800AAJS / UU158 80GB 3.5in 3Gbps 7.2K RPM Caviar Blue SATA HDD - New Pull OEM

Western Digital WD800AAJS / UU158 80GB 3.5" 3Gbps 7.2K RPM Caviar Blue SATA HDD - New Pull OEM

Alt MPN: UU158, 0UU158

WD Caviar® Blue™ Desktop Hard Drives - WD Caviar Blue hard drives are available with either SATA or PATA interface in a variety of cache sizes with a multitude of available features to deliver rock solid performance and ultra-cool and quiet operation perfect for family and business computing.

Product Features

  • Solid performance - With SATA and PATA interfaces, and cache sizes up to 32 MB, this series of drives offers a full range of performance features.
  • Ultra-cool and quiet - Keeping the drive cool enhances reliability. WD continues to develop new and innovative ways to keep drives cool while they are operating which helps protect the drive and the data stored on it.
  • Capacity - WD Caviar Blue drives are available in capacities from 80 GB to 1 TB because you can never have too much storage space.
  • NoTouch™ ramp load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.
  • IntelliSeek™ - Calculates optimum seek speeds to lower power consumption, noise and vibration.
  • ShockGuard™ - Instantaneously protects the hard drive against damage from bumps and vibrations while it is running. This technology enables WD Caviar drives to achieve industry-leading shock specifications.


This drive is compatible with any server that accepts 3.5"x1.0" (LFF Hard Drive) SATA Drives.

Model NumberWD800AAJS
Alt ModelUU158
Capacity80 GB
InterfaceSATA 3 Gbp/s
Formatted Capacity80,026 MB
User Sectors Per Drive156,301,488
SATA latching connectorYes
Form factor3.5-inch
RoHS compliantYes
Data Transfer Rate (maximum)
-Buffer to Host
Host to/from drive (sustained)

3 Gb/s
126 MB/s
Cache (MB)8
Rotational Speed (RPM)7200
Load/unload cycles300,000
Non-recoverable read errors per bits read1 in 10e14
12VDC peak (A, ±10%)1.77
Average Power requirements (W)

Temperature (°C)

0 to 60
-40 to 65
Shock (Gs)
Operating (2 ms, read/write)
Operating (2 ms, read)
Non-operating (1 ms)

Average acoustics (dBA)
Idle mode
Performance seek mode

Height (in/mm, max)1.028/25.4
Length (in/mm, max)5.787/147
Width (in/mm ± .01 in)4/101.6
Weight (lb/g ± 10%)0.95/430

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ROHS Compliant

Alternate MPNs: UU158 0UU158

Weight: 1.8 lb

Warranty: 1 Year DiscTech

New Pull

Condition Levels Explained

The product has been mounted in a brand new system (e.g. server), then removed from the system, before entering service. These products may have some hours of usage due to system build time / burn-in / testing etc. New Pulls are guaranteed to have at least 95% (often 99%) of their service life remaining , they may show signs of being physically mounted and dismounted. All handling is performed by trained technicians, taking full ESD precautions.

1 Year DiscTech Warranty

Product Warranties Explained

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