Western Digital 3,5" disk drives

Because of its inexpensive price, WD drives are very well suitable for SOHO markets. Most of them have a SATA interface unless otherwise noted. SAS drives usually consume more power, but despite of having a smaller cache they range at the upper scale of performance compared to similar SATA drives.

The new SATA "Gold" models even outperform SAS drives. They are hermetic sealed (unlike regular magnetic drives) and filled with helium gas to reduce friction.

Caviar Green (cool, quiet, decreased power)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701229.pdf
up to 3 TB
110 MB/s (123-150 MB/s for *ZRX/*ZDX models)
Intellipower, so no fixed rotational speed (RPM)
64 MB cache
300,000 load cycles
2.1-5.5 W power in idle mode (less power for *ZRX/*ZDX models)
2 years warranty

Green (cool, quiet, decreased power)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-771438.pdf
up to 4 TB
ca. 150 MB/s
Intellipower, so no fixed rotational speed (RPM)
64 MB cache
300,000 load cycles
2.5-3.3 W power in idle mode
2 years warranty

Caviar Blue (standard desktop)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701277.pdf
up to 1 TB
126-150 MB/s
7200 RPM
8-64 MB cache
300,000 load cycles
4.9-6.1 W power in idle mode
2 years warranty

Blue (standard desktop, energy efficient for non *X models)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-771436.pdf
up to 6 TB
126-175 MB/s (>= 147 MB/s for *Z?? models)
5400 RPM (7200 RPM for *X models)
16-64 MB cache
300,000 load cycles
2.5-3.4 W power in idle mode (>= 4.9 W for *X models)
2 years warranty

Caviar Black (desktop performance)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701276.pdf
up to 2 TB
126-150 MB/s
7200 RPM
64 MB cache (32 MB for *LX model)
300,000 load cycles
5.6-8.2 W power in idle mode
5 years warranty

Black (desktop high performance)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-771434.pdf
up to 6 TB
150-218 MB/s
7200 RPM
64-128 MB cache
300,000 load cycles
6.1- 7.6 W power in idle mode (8.1 W for *FZEX models)
5 years warranty

Purple (Surveillance)
https://www.wdc.com/content/dam/wdc/website/downloadable_assets/eng/spec_data_sheet/2879-800012.pdf
up to 10 TB
110-210 MB/s
5400 RPM
64-256 MB cache
300,000 load cycles
2.9 - 5.7 W power in idle mode
3 years warranty

Red / Red Pro (NAS Storage, *CX models are 2,5", *FF?? are Pro models and faster)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-800002.pdf
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-800022.pdf
up to 10 TB (up to 1 TB for *CX models)
147-214 MB/s (144 MB/s for *CX models)
Intellipower, so no fixed rotational speed (7200 RPM for *FF?? Pro models)
64-256 MB cache (16 MB for *CX models)
600,000 load cycles
1,000,000 hours MTBF
2.3-5.2 W power in idle mode (0.6 W for *CX models, >= 4.9 W for *FF?? Pro models)
3 years warranty (5 years warranty for Pro models)

Gold (Enterprise-class Storage, HelioSeal Technology)
https://www.wdc.com/content/dam/wdc/website/downloadable_assets/eng/spec_data_sheet/2879-800074.pdf
up to 10 TB
184-249 MB/s
7200 RPM
128-256 MB cache
600.000 load cycles
2,000,000 - 2,500,000 hours MTBF
5.0 - 7.1 W power in idle mode
5 years warranty

Re (RAID Edition)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-800044.pdf
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-800066.pdf
SAS: http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-771386.pdf
up to 6 TB
128-225 MB/s
7200 RPM
32-128 MB cache
600,000 load cycles
1,200,000-2,000,000 hours MTBF
0.63% AFR
4.4-9.2 W power in idle mode
5 years warranty

RE4-GP (RAID Edition Green Power)
http://products.wdc.com/library/SpecSheet/ENG/2879-701312.pdf
3.7-4.0 W power in idle mode

Caviar Re (RAID Edition with PATA interface)
http://support.wdc.com/product.aspx?ID=504&lang=en

Se (Datacenter capacity, increased reliablity)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-800042.pdf
up to 6 TB
164-214 MB/s
7200 RPM
64-128 MB cache
300,000 load cycles
800,000-1,200,000 hours MTBF
4.6-8.1 W power in idle mode
5 years warranty

Ae (Datacenter archive, spin-down capability for cold data)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-800045.pdf
6 TB
> 150 MB/s
5760 RPM
64 MB cache
300,000 load cycles
500,000 MTBF
4.8 W power in idle mode
3 years warranty

Xe (Datacenter, SAS)
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-771463.pdf
up to 900 GB
204 MB/s
10.000 RPM
32 MB cache
600,000 load cycles
2,000,000 hours MTBF
5.2 W power in idle mode
5 years warranty

 

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