Western Digital Caviar SE 250GB SATA II WD2500JS Prospecto
Los códigos de productos
WD2500JS
1
Western Digital defines a megabyte (MB) as 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
Effective maximum SATA II transfer rate (300 Gb/s). The SATA 1.0 transfer rate of 1.5 Gb/s is also supported.
3
20% duty cycle.
4
No non-recoverable errors during operating tests or after non-operating tests.
5
Sound power level.
Environmental Specifications
4
Shock
Vibration
Operating Temperature & Humidity
Non-Operating Temperature & Humidity
Acoustics (average)
Operating (2 ms)
30G (write), 65G (read)
Non-operating (2 ms)
300G (2-platter), 250G (3-platter)
Half sine wave measured in 2 ms duration, measured without isolation.
Operating
Linear: 20-300 Hz, 0.75G (0 to peak)
Random: 10 to 300 Hz, 0.004 g
Random: 10 to 300 Hz, 0.004 g
2
/Hz
Non-operating
5-20 Hz, 0.195 inches (double amplitude)
20-500 Hz, 4.0G (0 to peak)
20-500 Hz, 4.0G (0 to peak)
Temperature
5° C to 55° C
Humidity
5-95% RH non-condensing
Thermal Gradient
20° C/hour max
Temperature
-40° C to 65° C
Humidity
5-95% RH non-condensing
Thermal Gradient
30° C/hour
2-platter
3-platter
Idle mode
5
26 dBA
28 dBA
Perfomance seek mode 0
5
31 dBA
33 dBA
Quiet seek mode 3
5
27 dBA
29 dBA
Performance Specifications
Data Transfer Rate
Average read seek
8.9 ms (average)
Physical Dimensions
Power Requirements (average)
Buffer to host
300 MB/s
2
Buffer to disk
748 Mbits/s max
Track-to-track seek
2.0 ms (average)
Full stroke read seek
21 ms (average)
Average latency
4.2 ms
Rotational speed
7200 RPM
Read cache
Adaptive
Write cache
Yes
Buffer
8 MB (WD1200JS, WD1600JS,
WD2000JS, WD2500JS)
16 MB (WD2000KS, WD2500KS)
WD2000JS, WD2500JS)
16 MB (WD2000KS, WD2500KS)
Drive ready time
9.0 sec average
Start/stop cycles
50,000 min
LBA support
Yes
Error rate
(non-recoverable)
(non-recoverable)
<1 in 10
14
bits read
Height
1.028 in. (26.1 mm) max
Length
5.787 in. (147.0 mm) max
Width
4.0 in. (101.6 mm) ± .01 in.
Weight (Typ)
Standard Drive
Standard Drive
1.32 lb. (0.60 kg)
Mode
12V (±10%)
5V (±5%)
Power
Read/Write
3
450 mA
800 mA
9.5W
Idle
430 mA
730 mA
8.75W
Standby
20 mA
270 mA
1.6W
Sleep
20 mA
250 mA
1.5W
Physical Specifications
120 GB
160 GB
200 GB
250 GB
Model numbers
WD1200JS
WD1600JS
WD2000JS
WD2000KS
WD2000KS
WD2500JS
WD2000KS
WD2000KS
Formatted capacity
1
120,034 MB
160,041 MB
200,049 MB
250,059 MB
User sectors per drive
234,441,648
312,581,808
390,721,968
488,397,168
Interface
SATA II
SATA II
SATA II
SATA II
Form factor
3.5-inch
3.5-inch
3.5-inch
3.5-inch
Bytes per sector (STD)
512
512
512
512
Dedicated landing zone
Yes
Yes
Yes
Yes
Actuator latch/auto park
Yes
Yes
Yes
Yes
SATA latching connector
Yes
Yes
Yes
Yes
Western Digital
Serial ATA Hard Drives
WD Caviar SE
For service and literature:
support.wdc.com
www.westerndigital.com
www.westerndigital.com
Western Digital and WD Caviar are registered
trademarks; and WD and the WD logo are
trademarks of Western Digital Technologies, Inc.
Other marks may be mentioned herein that belong
to other companies. Product specifications subject
to change without notice.
trademarks; and WD and the WD logo are
trademarks of Western Digital Technologies, Inc.
Other marks may be mentioned herein that belong
to other companies. Product specifications subject
to change without notice.
© 2005 Western Digital Technologies, Inc.
All rights reserved.
All rights reserved.
Western Digital
20511 Lake Forest Drive
Lake Forest, California U.S.A. 92630
20511 Lake Forest Drive
Lake Forest, California U.S.A. 92630
2879-001138-A00 04/05
800.
ASK
.4
WDC
North America
949.672.7199
Spanish
+800.6008.6008
Asia Pacific
+31.20.4467651
EMEA