SOLVED: Seagate vs Western Digitals 12TB & 14TB Comparison

If you have tried to buy a 12TB or 14TB hard drive in recent months you will find that it is difficult to locate comparisons of the Seagate and Western Digital Options.

Because we needed to source a pile of these we developed the simple spec comparisons below and highlighted the notables:

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12TB Comparison

Brand	Seagate	Seagate	Western Digital	Western Digital
Product	Baracuda Pro	Exos X Series	HGST Ultrastar DC	Gold Enterprise
Part #	ST12000DM0007	ST12000NM0007	HUH721212ALE604	WD121KRYZ
Capacity	12TB	12TB	12TB	12TB
Size	3.5″	3.5″	3.5″	3.5″
Rotation	7200RPM	7200RPM	7200RPM	7200RPM
Interface	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s
Cache	256MB	256MB	256MB	256MB
Sustained Transfer	250MB/s	250MB/s	250MB/s	250MB/s
Latency	4.16ms	4.16ms	4.16ms	4.16ms
Acoustic Idle/Seek	28/34	28/34	20/36	20/36
Workload	300TB/yr	550TB/yr	550TB/yr	550TB/yr
MTBF	1M Hours	2.5M Hours	2.5M Hours	2.5M Hours
Warranty	5 Years	5 Years	5 Years	5 Years
Spec Sheet	Click HERE	Click HERE	Click HERE	Click HERE

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14TB Comparison

Brand	Seagate	Western Digital
Product	Baracuda Pro	HGST Ultrastar DC
Part #	ST14000DM001	WUH721414ALE6L4
Capacity	14TB	14TB
Size	3.5″	3.5″
Rotation	7200RPM	7200RPM
Interface	SATA 6Gb/s	SATA 6Gb/s
Cache	256MB	512MB
Sustained Transfer	250MB/s	250MB/s
Latency	4.16ms	4.16ms
Acoustic Idle/Seek	18/28	20/36
Workload	300TB/yr	550TB/yr
MTBF	1M Hours	2.5M Hours
Warranty	5 Years	5 Years
Spec Sheet	Click HERE	Click HERE

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What is Happening with WD Disk Naming?

Take note that a couple of years ago Western Digital decided to rebrand its high end disks from “Gold” to “HGST Ultrastar” but they have apparently reversed that decision:

 

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