HGST HDS724040ALE640 3.5″ hard drive with a storage capacity of 4 TB and featuring a SATA interface. HGST HDS724040ALE640 Deskstar 7K4000 4 TB 3.5″ Internal Hard Drive Serial ATA-600 7200 RPM 64 MB Buffer.
All information about the HGST HDS724040ALE640 hard disk drive: technical parameters, failure symptoms, frequently asked questions, reviews, HDD repair and data recovery.

HGST HDS724040ALE640 Technical Details:
Note: The HGST HDS724040ALE640 is part of the Deskstar 7K4000 series, released around 2012-2013. This was HGST’s flagship high-performance consumer drive, offering 4 TB of storage at 7200 RPM. The 7K4000 series featured 4 platters and 8 heads, delivering excellent capacity and performance. It was one of the first 4 TB consumer drives on the market and became a favorite among NAS and RAID users.
HGST HDS724040ALE640 Hard Drives:
- HDS724040ALE640 – 4 TB SATA 3.5″ Performance Hard Drive, Deskstar 7K4000 series
HGST HDS724040ALE640 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
HGST HDS724040ALE640 Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems HGST HDS724040ALE640 hard drive experience is a burned circuit board (PCB). Therefore, if you need to replace the PCB, be sure to match the “PCB Number” of the current board, such as 0A90379, etc.
