Western Digital WD2503ABYZ manual WD Re, Specifications, 4 TB, 3 TB, 2 TB, 1 TB, 500 GB, 250 GB

WD Re

Specifications	4 TB	3 TB	2 TB	2 TB	1 TB	500 GB	250 GB
Model number	WD4000FYYZ	WD3000FYYZ	WD200MFYYZ	WD2000FYYZ	WD1003FBYZ	WD5003ABYZ	WD2503ABYZ
Interface	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s	SATA 6 Gb/s
Formatted capacity1	4 TB	3 TB	2 TB	2 TB	1 TB	500 GB	251 GB
User sectors per drive	7,814,037,168	5,860,533,168	3,907,029,168	3,907,029,168	1,953,525,168	976,773,168	490,350,672
Native command queuing	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Form factor	3.5-inch	3.5-inch	3.5-inch	3.5-inch	3.5-inch	3.5-inch	3.5-inch
RoHS compliant2	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Performance
Data transfer rate (max)
Buffer to host	6 Gb/s	6 Gb/s	6 Gb/s	6 Gb/s	6 Gb/s	6 Gb/s	6 Gb/s
Host to/from drive (sustained)	171 MB/s	168 MB/s	164 MB/s	164 MB/s	128 MB/s	128 MB/s	128 MB/s
Cache (MB)	64	64	64	64	64	64	64
Rotational speed (RPM)	7200	7200	7200	7200	7200	7200	7200
Reliability/Data Integrity
Load/unload cycles3	600,000	600,000	600,000	600,000	600,000	600,000	600,000
Non-recoverable read errors per bits read	<10 in 1016	<10 in 1016	<10 in 1016	<10 in 1016	<10 in 1016	<10 in 1016	<10 in 1016
MTBF (hours)4	1,200,000	1,200,000	1,200,000	1,200,000	1,200,000	1,200,000	1,200,000
AFR (%)4	0.73	0.73	0.73	0.73	0.73	0.73	0.73
Limited warranty (years)5	5	5	5	5	5	5	5
Power Management
Average power requirements (W)
Sequential read	10.2	10.2	10.2	8.1	8.2	6.5	6.5
Sequential write	9.7	9.7	9.7	7.7	8.3	6.4	6.4
Random read/write	10.9	10.9	10.9	9	8.6	6.3	6.3
Idle	8.6	8.6	8.6	6.4	5.9	4.4	4.4
Environmental Specifications6
Temperature (°C)
Operating	5 to 55	5 to 55	5 to 55	5 to 55	5 to 55	5 to 55	5 to 55
Non-operating	-40 to 70	-40 to 70	-40 to 70	-40 to 70	-40 to 70	-40 to 70	-40 to 70
Shock (Gs)
Operating (2 ms, read/write)	30	30	30	30	30	30	30
Operating (2 ms, read)	65	65	65	65	65	65	65
Non-operating (2 ms)	300	300	300	300	300	350	350
Acoustics (dBA)7	31	31	31	31	28	27	27
Idle
Seek (average)	34	34	34	34	33	30	30
Physical Dimensions
Height (in./mm, max)	1.028/26.1	1.028/26.1	1.028/26.1	1.028/26.1	1.028/26.1	1.028/26.1	1.028/26.1
Length (in./mm, max)	5.787/147	5.787/147	5.787/147	5.787/147	5.787/147	5.787/147	5.787/147
Width (in./mm, ± .01 in.)	4/101.6	4/101.6	4/101.6	4/101.6	4/101.6	4/101.6	4/101.6
Weight (lb./kg, ± 10%)	1.66/0.75	1.66/0.75	1.66/0.75	1.55/0.70	1.49/0.68	0.99/0.45	0.99/0.45

1 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 buffer or cache, one megabyte (MB) = 1,048,576 bytes. 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. Effective maximum SATA 6 Gb/s transfer rate calculated according to the Serial ATA specification published by the SATA-IO organization as of the date of this specification sheet. Visit www.sata-io.org for details.

2WD hard drive products manufactured and sold worldwide after June 8, 2011, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the RoHS Directive 2011/65/EU.

3Controlled unload at ambient condition.

4 Product MTBF and AFR specifications are based upon a 40°C base casting and system workloads of up to 550 TB/year (workload is defined as the amount of user data transferred to or from the hard drive).

5The term of the limited warranty may vary by region. Visit http://support.wd.com/warranty for details.

6No non-recoverable errors during operating tests or after non-operating tests.

7Sound power level.

Western Digital	For service and literature:
3355 Michelson Drive, Suite 100	http://support.wd.com
Irvine, California 92612
	www.wd.com
U.S.A.
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	+31.880062100	Europe/Middle East/Africa

Canada ICES-003 Class B / NMB-003 Classe B

Western Digital, WD, and the WD logo are registered trademarks in the U.S. and other countries; and WD Re, RAFF, NoTouch, StableTrac, and FIT Lab 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.

© 2013 Western Digital Technologies, Inc. All rights reserved.

2879-771444-A03 Aug 2013