WD40EMAZ Western Digital 3.5″ hard drive with a storage capacity of 4TB and featuring a SATA interface.
All information about the Western Digital WD40EMAZ hard disk drive: technical parameters, failure symptoms, frequently asked questions, reviews, HDD repair and data recovery.
Western Digital WD40EMAZ Technical Details:
- Hard Disk Model: WD40EMAZ
- Disk Family: WD Blue / Elements (External Shucked Series)
- Form Factor: 3.5″
- Capacity: 4 TB (4,000,000,000,000 bytes)
- Rotational Speed: 5400 RPM
- Rotation Time: 11.11 ms
- Average Rotational Latency: 5.56 ms
- Disk Interface: SATA III (6.0 Gb/s)
- Buffer-Host Max. Rate: 600 MB/second
- Buffer Size: 256 MB
- Number of Disks (Platters): 3
- Number of Heads: 6
- Width: 101.6 mm (4.00 inch)
- Depth: 147.0 mm (5.79 inch)
- Height: 26.1 mm (1.02 inch)
- Weight: 640 grams (1.41 pounds)
- Manufacturer: Western Digital Technologies, Inc.
Western Digital WD40EMAZ Hard Drives:

- WD40EMAZ-11LW3B0, DCM , Western Digital 4TB SATA 3.5″ Hard Drive
Western Digital WD40EMAZ Failure Symptoms:
- Electrical Failure Symptoms:
Drive is powered, but shows no sign of function;
Disk knocking as the motor fails to spin;
Clicking sound as the heads search or initialize; - Mechanical Failure Symptoms:
Clicking, grinding sounds;
Completely quiet due to ” motor freeze”;
“music” tone as the disk is powered up; - Logical Failure Examples:
Accidental deletion, accidental format, file corruption, software bugs, file system corruption, viruses and malware, and many, many more. - Firmware Failure Symptoms:
drive powers up, but is not recognised by the computer;
Drive powers up, but is recognised wrongly, sometimes with nonsensical characters;
Drive freezes during booting up; - Bad Platter Area Symptoms:
Hard disk still accessible but appear to “hang” or “sluggish”;
Constant Cyclic Redundancy (CRC) errors;
Unable to access folders or files which could be seen; - Complex Failure Model
Western Digital WD40EMAZ Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Western Digital WD40EMAZ Hard Disk Drive experience is burnt circuit board(PCB). So if you will need to match a replacement PCB, it is important that you note the “Board Number” of your current circuit board in addition to the hard drive’s “Model Number“.
Multiple PCB Number revisions:
2060-810011-001, etc.
Multiple Model Number revisions:
WD40EMAZ-11LW3B0, etc.