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product page	view details	view details	view details	view details	view details	view details	view details	view details	view details	view details	view details
price	R 1,399.00	R 4,599.00	R 1,299.01	R 2,799.00	R 6,198.99	R 6,899.00	R 8,999.00	R 9,099.00	R 10,499.01	R 11,699.00	R 13,999.00
model	WD Blue 3.5" 1TB / WD10EZEX	WD Black 3.5" 4TB / WD4005FZBX	WD Blue 3.5" 2TB / WD20EZAZ	WD Blue 3.5" 4TB / WD40EZAZ	WD Gold Enterprise Class 10TB / WD102KRYZ	WD Gold Enterprise Class 12TB / WD121KRYZ	WD Gold Enterprise Class 14TB / WD141KRYZ	WD Gold Enterprise Class 16TB / WD161KRYZ	WD Gold Enterprise Class 18TB / WD181KRYZ	WD Gold Enterprise Class 20TB / WD202KRYZ	WD Gold Enterprise Class 22TB / WD221KRYZ
name	WD Blue 3.5" 1TB Desktop Hard Drive (WD10EZEX)	WD Black 3.5" 4TB Desktop Hard Drive (WD4005FZBX)	WD Blue 3.5" 2TB Desktop Hard Drive (WD20EZAZ)	WD Blue 3.5" 4TB Desktop Hard Drive (WD40EZAZ)	WD Gold Enterprise Class 10TB 3.5" Hard Drive (WD102KRYZ)	WD Gold Enterprise Class 12TB 3.5" Hard Drive (WD121KRYZ)	WD Gold Enterprise Class 14TB 3.5" Hard Drive (WD141KRYZ)	WD Gold Enterprise Class 16TB 3.5" Hard Drive (WD161KRYZ)	WD Gold Enterprise Class 18TB 3.5" Hard Drive (WD181KRYZ)	WD Gold Enterprise Class 20TB 3.5" Hard Drive (WD202KRYZ)	WD Gold Enterprise Class 22TB 3.5" Hard Drive (WD221KRYZ)
details	* SATA3 * 7200rpm * 64MB Cache * 150MB/s Host to/from (Sustained) * For Desktop	* For use in Gaming PCs, Multimedia & Workstation * 7200rpm * 256 MB/s Host to/from Drive (Sustained Transfer Rate) * 256 Cache * NoTouch Ramp Load Technology	* SATA3 * 5400rpm * 256MB Cache * 180MB/s Host to/from (Sustained) * For Desktop	* SATA3 * 5400rpm * 256MB Cache * 180MB/s Host to/from (Sustained) * For Desktop	* SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 262MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux	* SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 255MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux	* SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 267MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux	* SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 262MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux	* SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 269MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux	* SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 291MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux	* SATA * 7200rpm * 256MB Cache * Max Data Transfer Rate: 291MB/s * Engineered for heavy application workloads and designed to handle workloads up to 550TB per year. * Specifically designed for use in enterprise-grade storage systems and data centers * ArmorCache feature * up to 2.5M hours MTBF * HelioSeal technology delivers high capacities with low power draw (12TB & up) * OptiNAND technology in 20TB and 22TB * Compatible with Windows, Windows Server, and Linux
warranty	2 years	5 years	2 years	2 years	5 years	5 years	5 years	5 years	5 years	5 years	5 years
General
Model	WD Blue 3.5" 1TB	WD Black 3.5" 4TB	WD Blue 3.5" 2TB	WD Blue 3.5" 4TB	WD Gold Enterprise Class 10TB	WD Gold Enterprise Class 12TB	WD Gold Enterprise Class 14TB	WD Gold Enterprise Class 16TB	WD Gold Enterprise Class 18TB	WD Gold Enterprise Class 20TB	WD Gold Enterprise Class 22TB
Product Line	WD Blue 3.5"	WD Black 3.5"	WD Blue 3.5"	WD Blue 3.5"	WD Gold Enterprise Class	WD Gold Enterprise Class	WD Gold Enterprise Class	WD Gold Enterprise Class	WD Gold Enterprise Class	WD Gold Enterprise Class	WD Gold Enterprise Class
Drive Type	Desktop	Desktop	Desktop	Desktop	Desktop	Desktop	Desktop	Desktop	Desktop	Desktop	Desktop
SSHD	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>
Form Factor	3.5 inch	3.5 inch	3.5 inch	3.5 inch	3.5 inch	3.5 inch	3.5 inch	3.5 inch	3.5 inch	3.5 inch	3.5 inch
Capacity	1 TB	4 TB	2 TB	4 TB	10 TB	12 TB	14 TB	16 TB	18 TB	20 TB	22 TB
Interface	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3	SATA3
Drive Format	<not specified>	<not specified>	<not specified>	<not specified>	512e	512e	512e	512e	512e	512e	512e
Self Encrypting Drive (SED)	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>
Certification	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>
Performance
Rotational Speed	7200 rpm	7200 rpm	5400 rpm	5400 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm	7200 rpm
Cache Size	64 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB	256 MB
Average Latency	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>
Data Rate	150 MB/s	256 MB/s	180 MB/s	180 MB/s	262 MB/s	255 MB/s	267 MB/s	262 MB/s	269 MB/s	291 MB/s	291 MB/s
Random read seek time	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>
Random write seek time	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>
Thickness	<not specified>	26.1 mm	<not specified>	<not specified>	26.1 mm	26.1 mm	26.1 mm	26.1 mm	26.1 mm	26.1 mm	26.1 mm
Optional Accessories
Rescue Plan	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>	<not specified>