Due to the COVID-19 crisis, some orders may be delayed in fulfillment and shipping. Our sales team is able to advise on product availability and hardware recommendations. We are working very hard to support our customers and ensure safe conditions for our staff. Read More about how we’re handling COVID-19 Here. Due to the COVID-19 crisis, some orders may be delayed in fulfillment. Our sales team is able to advise on product availability and hardware recommendations. Read more Here.
Scroll Back to Top menu
AVADirect Custom Computers
My Cart

12TB Red WD120EFAX, 5400 RPM, SATA 6Gb/s, 256MB cache, 3.5-Inch HDD

SKU: 12791972



Availability: Out of Stock

Price: $346.72
or as low as $11/month
Model number1 WD120EFAX
Interface SATA 6 Gb/s
Formatted capacity2 12TB
Form factor 3.5-inch
Advanced Format (AF) Yes
Native command queuing Yes
RoHS compliant3 Yes
Interface Transfer Rate² (read
speed) up to
196 MB/s
Cache (MB) 256
Performance Class 5400 RPM Class
Reliability/Data Integrity
Load/unload cycles4 600,000
Non-recoverable read errors per  bits read <10 in 1014
MTBF (hours)5 1,000,000
Workload Rate (TB/yr) 10 180
Limited warranty (years)6 3
Power Management
12VDC-/+10% (A, peak) 1,84
Average power requirements (W) 

Environmental Specifications7
Temperature (°C) 

0 to 65 
-40 to 70
Shock  (Gs)
Operating (2 ms, read/write)
Operating (2 ms, read)
Non-operating (2 ms)

Acoustics (dBA)9
Seek  (average)

Physical Dimensions
Height (in./mm, max) 1.028/26.1
Length (in./mm, max) 5.787/147
Width (in./mm, ± .01 in.) 4/101.6
Weight (lb/kg, ± 10%) 1.43/0.65
1 Not all products may be available in all regions of the world.
2 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.
3 WD 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.
4 Controlled unload at ambient condition.
5 Based on a typical NAS product environment under normal operating conditions.
6 The term of the limited warranty may vary by region. Visit http://support.wd.com/warranty for details.
7 No non-recoverable errors during operating tests or after non-operating tests.
8 On the base casting.
9 Sound power level.
10 Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred X (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.