ST9640424AS Seagate 2.5″ hard drive with a storage capacity of 640 GB and featuring a SATA interface. ST9640424AS SEAGATE 2.5″ 640 GB Serial-ATA/300 Momentus 5400 640424 5400 RPM Hard Drive.

All information about the Seagate ST9640424AS hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.

Seagate ST9640424AS Technical Details:

  • Hard Disk Model: SEAGATE ST9640424AS
  • Disk Family: Momentus 5400 640424
  • Form Factor: 2.5″
  • Capacity: 640 GB (640 x 1 000 000 000 bytes)
  • Number Of Disks: 2
  • Number Of Heads: 4
  • Rotational Speed: 5400 RPM
  • Rotation Time: 11.11 ms
  • Average Rotational Latency: 5.56 ms
  • Disk Interface: Serial-ATA/300
  • Buffer-Host Max. Rate: 300 MB/seconds
  • Buffer Size: 16384 KB
  • Drive Ready Time (typical): 3.6 seconds
  • Average Seek Time: 11 ms
  • Track To Track Seek Time: 1.5 ms
  • Full Stroke Seek Time: 27 ms
  • Width: 69.85 mm (2.72 inch)
  • Depth: 100.35 mm (3.94 inch)
  • Height: 9.5 mm (0.35 inch)
  • Weight: 115 grams (0.25 pounds)
  • Acoustic (Idle): 2.3 Bel
  • Acoustic (Min performance and volume): 2.5 Bel
  • Acoustic (Max performance and volume): 3.0 Bel
  • Required Power For Spinup: 1200 mA
  • Power Required (Seek): 2.4 W
  • Power Required (Idle): 1.2 W
  • Power Required (Standby): 0.36 W
  • Manufacturer: Seagate Technology

Seagate ST9640424AS Hard Drives:

  • ST9640424AS SEAGATE 2.5″ 640 GB Serial-ATA/300 Momentus 5400 640424 5400 RPM Hard Drive.

Seagate ST9640424AS 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

Seagate ST9640424AS Data Recovery & HDD Repair:

When it comes to data recovery one of the most common problems Seagate ST9640424AS 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 etc.