Hitachi HTS721075A9E630 2.5″ hard drive with a storage capacity of 750 GB and featuring a SATA interface. Hitachi HTS721075A9E630 Travelstar 7K750 750 GB 2.5″ Internal Hard Drive Serial ATA-300 7200 RPM 16 MB Buffer.

All information about the Hitachi HTS721075A9E630 hard disk drive: technical parameters, failure symptoms, frequently asked questions, reviews, HDD repair and data recovery.

Hitachi HTS721075A9E630

Hitachi HTS721075A9E630 Technical Details:

Manufacturer:
Hitachi (HGST)
Hard Disk Model:
HTS721075A9E630
Disk Family:
Travelstar 7K750
Form Factor:
2.5″
Capacity:
750 GB (750,000,000,000 bytes)
Formatted Capacity:
Approximately 698 GB
Number Of Disks:
2
Number Of Heads:
4
Rotational Speed:
7200 RPM
Average Seek Time:
11.0 ms (read) / 12.0 ms (write)
Disk Interface:
Serial ATA-300 (SATA 3 Gb/s)
Buffer Size:
16384 KB (16 MB)
External Transfer Rate:
300 MB/s
Mean Time Between Failures (MTBF):
500,000 hours

Note: The Hitachi HTS721075A9E630 is part of the Travelstar 7K750 series, a high-performance 2.5″ laptop hard drive line. The “7K” designation indicates 7200 RPM spindle speed, offering faster performance than standard 5400 RPM laptop drives. This series was popular for gaming laptops and performance-oriented notebooks.


Hitachi HTS721075A9E630 Hard Drives:

  • HTS721075A9E630 – 750 GB SATA 2.5″ Performance Laptop Hard Drive, Travelstar 7K750 series

Hitachi HTS721075A9E630 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

Hitachi HTS721075A9E630 Data Recovery & HDD Repair:

When it comes to data recovery one of the most common problems Hitachi HTS721075A9E630 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 0J14465, etc.

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