Western Digital WD1200JD, WD1600JD, WD2000JD, WD2500JD, WD400JD User Manual

1.5 Gb/s

(Serial ATA 1.0)

3.5-inch/1-inch

7200 RPM

40 to 250 GB

WD400JD

WD800JD
WD1200JD
WD1600JD
WD2000JD
WD2500JD

Note: All products may

not be available in all

regions of the world.

Carrying on the heritage of WD Caviar SE hard drives as industry-leading performers, W estern
Digital offers WD Caviar SE Serial AT A (SAT A) hard drives which feature capacities as large as
250 GB and an 8 MB buffer, to fill acute demand in market segments such as high-end PC,
workstation, and entry-level servers. Designers of enterprise storage systems and servers are
increasingly using desktop-class, large-capacity SATA hard drives because of the advantages
provided by the SATA interface. Benefits include a data transfer rate of 150 MB/s and
improved cabling that enables greater system design flexibility.

Product Benefits

! 8 MB cache – fast data transfer from a cache four times larger than the

industry-s tandard 2 MB size.

! 7200 RPM – high-performance rotational speed for high-capacity hard drives.
! Data Lifeguard Tools

Data Lifeguard
system, and embedded error detection and r epair featur es ) to make hard drive installation,
management, and diagnostics simple and worry-free.

! SecureConnect

first-generation SATA hard drives and cables; ensures backward compatibility with legacy
SATA cables and backplanes.

Note: Western D igital's Seri al A T A cable with SecureConnect is reco mmended for use with

all Western Digital Serial ATA hard drives.

! FlexPower

™

– connector technology that accep ts power from both industry-standard and

new SATA power supplies.

! Point-to-point bus configuration – utilizes the full bandwidth of each drive interface in a

networked environment.

! Hot plug support – allows swapping of hard drives without having to power down the

system or reboot; promotes system design flexibility, data availability, and serviceability.

! Backplane compatibility – p romotes expandability and flexibility in syste m architecture.

™

™

™

– software utility that works in conjunction with the embedded

features (including shock protection, an environmental protection

– provides a 500 percent stronger cable-to-drive connection than

The Western Digital Promise

Western Digital understands the importance of the data stored on our hard drives. We are
committed to p rovid ing our customers with re liable, high-perfor mance storage products and
superior customer support and services.

Physical Specifications

40 GB 80 GB 120 GB 160 GB 200 GB 250 GB

Model number WD400JD WD800JD WD1200JD WD1600JD WD2000JD WD2500JD
Interface 1.5 Gb/s 1.5 Gb/s 1.5 Gb/s 1.5 Gb/s 1.5 Gb/s 1.5 Gb/s

(Serial ATA 1.0) (Serial ATA 1.0) (Serial ATA 1.0) (Serial ATA 1.0) (Serial ATA 1.0) (Serial ATA 1.0)
Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch
Formatted capacity

1

40,020 MB 80,026 MB 120,034 MB 160,041 MB 200,049 MB 250,059 MB
User sectors per drive 78,165,360 156,301,488 234,441,648 312,581,808 390,721,968 488,397,168
Bytes per sector (STD) 512 512 512 512 512 512
Dedicated landing zone Yes Yes Yes Yes Yes Yes
Actuator latch/auto park Yes Yes Yes Yes Yes Yes
Warranty

2

3-year 3-year 3-year 3-year 3-year 3-year

Performance Specif i cations

Data Transfer Rate

-Buffer to host

-Buffer to disk 748 Mbits/s max
Read seek 8.9 ms (average)

Track-to-track seek
Full stroke read seek
Average latency 4.2 ms
Rotational speed 7200 RPM
Read cache Adaptive
Write cache Yes
Buffer 8 MB
Drive ready time 9.0 sec average
Start/stop cycles 50,000 min
LBA support Yes
Error rate
(non-recoverable) <1 in 10

3

4

4

150 MB/s

2.0 ms (average)
21 ms (average)

14

bits read

1

Western Digital defines a megabyte (MB) as 1,000,000 bytes and a gigabyte (GB) as 1,000,000,000 bytes. Some operating systems use
the binary numbering system which results in a lower reported capacity.

2

Three-year standard warranty on bulk WD Caviar SE Serial ATA hard driv es. Thi s standard warranty may be subject to variations
imposed by local law or regulatio ns.

3

Effective maximum transfer rate running Serial ATA 1.0.

4

On reads and writes.

For service and literature:

800.ASK.4WDC U.S.A.
+31.20.4467651 Europe

support.wdc.com
www.westerndigital.com

Western Digital, the Western Digital logo, and
WD Caviar are registered trademarks, and
Data Lifeguard, Data Lifeguard Tools,
SecureConnect, FlexPower, and
FIT Lab are trademarks of Western Digital
Technologies, Inc. Other marks may be
mentioned herein that belong to other
companies. Product specifications subje ct to
change without notice.

©2004 Western Digital Technologies, Inc.
All rights reserved.

Western Digital
20511 Lake Forest Drive
Lake Forest, California 92630 U.S.A.

2879-001081-003 02/04