WD Red 3TB 3.5" SATA NAS 147MB/s HDD

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WD did everyone a favor when they reorganized their products under color-coded branding a few years ago. With the Blue (mainstream), Green (quiet and cool) and Black (performance) lines well laid out, consumers have a much easier time picking out the right drive for their application, rather than poring over spec sheets and complex model numbers. And now there's another line to add to that list: Red. Designed specfically to be used in 1-5 bay NAS devices, the Red line has hardware and software features that make it suited for that particular climate, while delivering impressive performance and reliability. WD has worked with major NAS manufacturer's to ensure compatibility with as many common NAS products as possible, and has a list of the tested devices here.

The secret sauce in these drives is the firmware, or as WD is calling it NASware. NAS devices in the home are often used for bulk storage of media, they may have some shared documents and be used as back-ups, too; but they're most often used to store movies, music and images. ATA streaming command is featured in NASware, to alter the behavior of the drive while streaming media, in an effort to ensure smooth playback, even while serving mutliple streams. They've also included error correction optimizations to prevent a drive from dropping out of a RAID array while it chases down a piece of corrupt data. The downside is that you might see an artifact on the screen briefly while streaming a movie, the upside is that you won't have playback pause for a few seconds, or for good depending on your configuration, while the drive drops off the RAID to fix the error.

Then there's the matter of performance. With quoted performance of around 150 MB/s these drives are nudging into Black territory. WD's new balance mechanism contributes to this. By actively balancing the drive during use there's no need to slow the drive down to prevent damage, so performance remains high. There's also a reported power savings, which WD says will make up the price delta for these drives over the rest of the line through your power bill


HDD size The amount of data that the hard drive can store.
HDD capacity The maximum storage capacity of the hard disk, usually measured in bytes e.g. GB.
3000 GB
HDD speed The rotational speed of a hard disk expressed in rotations per minute. The faster the better.
5400 RPM
Interface Interface ports to connect pieces of equipment. USB (Universal Serial Bus) has become the most popular wired interface to connect peripherals. USB 2.0 supports speeds up to 480 Mbit/s (USB 1: 12 Mbit/s). The interface FireWire is also known as the IEEE 1394 standard. Enhanced IDE (EIDE)is sometimes referred to as Fast ATA, Fast IDE or ATA-2.
Serial ATA III
Type Characteristics of the device.
Component for What this product is used as a part of (component for).
Storage drive buffer size
64 MB
HDD interface transfer rate
6 Gbit/s
HDD sustained transfer rate
147 MiB/s
Start/stop cycles
Mean time between failures (MTBF) Statistical model used to indicate product/mechanism reliability; expressed in hours and percentage of duty cycle. This number (in hours) does not indicate the mean time before failure for a single unit/mechanism.
1000000 h
RoHS compliance The Restriction of Hazardous Substances (RoHS) Directive aims to restrict certain dangerous substances commonly used in electrical and electronic equipment. Any RoHS compliant product is tested for the presence of Lead (Pb), Cadmium (Cd), Mercury (Hg), Hexavalent chromium (Hex-Cr), Polybrominated biphenyls (PBB), and Polybrominated diphenyl ethers (PBDE). PBB and PBDE are flame retardants used in several plastics. For Cadmium and Hexavalent chromium, there must be less than 0.01% of the substance by weight at raw homogeneous materials level. For Lead, PBB, and PBDE, there must be no more than 0.1% of the material, when calculated by weight at raw homogeneous materials. Any RoHS compliant component must have 100 ppm or less of mercury and the mercury must not have been intentionally added to the component. In the EU, some military and medical equipment are exempt from RoHS compliance.


Power consumption (standby) The amount of electricity that is consumed when the product is on standby.
0.4 W
Power consumption (read)
4.1 W
Power consumption (write)
4.1 W
Power consumption (idle)
2.7 W
Operating voltage Defines the range of operating voltages available
5 / 12 V
Start-up current
1.73 A

Operational conditions

Operating temperature (T-T) The minimum and maximum temperatures at which the product can be safely operated.
0 - 65 °C
Storage temperature (T-T) The minimum and maximum temperatures at which the product can be safely stored.
-40 - 70 °C
Operating shock Environmental requirements for optimal protection from impact in operating mode
30 G
Non-operating shock Environmental requirements for optimal protection from impact in non-operating mode
250 G

Weight & dimensions

Width The measurement or extent of something from side to side.
101.6 mm
Height The measurement of the product from head to foot or from base to top.
26.1 mm
Depth The distance from the front to the back of something.
147 mm
Weight Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
640 g

Packaging data

Storage drive adapter included An adapter is included for usage with additional storage drived included in the packaging.
Quantity The number of products there are.
SKU 213171
Brand Western Digital
Product Condition Brand New/Unused
Series Desktop NAS
Hard Drive Spindle Speed 5400RPM
Transfer Speed 128MB/S
Storage Size (HDD) 3000 GB
Storage Technology SATA 6Gb/s
Cache 64MB Cache
Product Use Business