Western Digital RE 4TB 20 Pack WD4000FYYZ-20PK 전단

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WD4000FYYZ-20PK
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Product Specifications
WD RE  
SATA Hard Drives
Western Digital, WD, the WD logo and Put Your Life On It are registered trademarks in the U.S. and other countries; and StableTrac and RAFF are trademarks of Western Digital Technologies, Inc. Other marks may be mentioned herein that belong to other companies. Pictures shown may 
vary from actual product. Not all products may be available in all regions of the world. All product and packaging specifications subject to change without notice. © 2012 Western Digital Technologies, Inc. All rights reserved.
As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for transfer rate or interface, megabyte per second 
(MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second. 
             
 
 
 
 
 
 
 
2178-771177-A00 
Sept 
2012
IntERfacE
foRm factoR
SPIn SPEED
cachE
SATA 6 Gb/s (FYYZ models)
SATA 3 Gb/s
3.5-inch 
7200 RPM
64 MB
moDELS
caPacItIES
mtBf
LImItED WaRRanty
WD4000FYYZ
WD3000FYYZ
WD2000FYYZ
WD2003FYYS
WD1003FBYX
WD5003ABYX
WD2503ABYX
4 TB
3 TB
2 TB
1 TB
500 GB
250 GB
1.2 million hours 
5 years
Product features
Industry’s highest capacity 
nearline drive 
WD RE SATA hard drives are available 
in capacities up to 4 TB to suit even 
the most demanding storage needs.
highest performance for 
business-critical applications 
WD RE SATA delivers 6 Gb/s transfer 
rates, sustained sequential data rates 
up to 171 MB/s and high random 
I/O rates.
Designed for quality  
and reliability
With a field-tested 1.2 million hour 
MTBF, this high performance drive 
delivers the highest level of reliability 
for 24x7 operation in up to 100% duty 
cycle applications.
Dual processor 
Twice the processing power to 
maximize performance.
Vibration protection 
Enhanced RAFF
 technology includes 
sophisticated electronics to monitor 
the drive and correct both linear and 
rotational vibration in real time. The 
result is a significant performance 
improvement in high vibration 
environments over the previous 
generation of drives.
Dual actuator technology 
A head positioning system with 
two actuators improves positional 
accuracy over the data track(s). The 
primary actuator provides coarse 
displacement using conventional 
electromagnetic actuator principles. 
The secondary actuator uses 
piezoelectric motion to fine tune the 
head positioning to a higher degree 
of accuracy. (2 TB and above)
Stabletrac
The motor shaft is secured at both ends 
to reduce system-induced vibration and 
stabilize platters for accurate tracking 
during read and write operations. (2 TB 
and above)
multi-axis shock sensor 
Automatically detects the subtlest 
shock events and compensates to 
protect the data.
RaID-specific, time-limited 
error recovery (tLER) 
Prevents drive fallout caused by the 
extended hard drive error-recovery 
processes common to desktop drives.
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.
thermal extended burn-in test 
Each drive is put through extended  
burn-in testing with thermal cycling to 
ensure reliable operation.
Dynamic fly height technology 
Each read-write head’s fly height is 
adjusted in real time for optimum reliability.