ST9640320AS Seagate 2.5″ hard drive with a storage capacity of 640GB and featuring a SATA interface. ST9640320AS Seagate Momentus 640GB SATA 3GB/s 5400RPM 8MB Cache 2.5-inch Internal Laptop Hard DriveS.
All information about the Seagate ST9640320AS hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.
Seagate ST9640320AS Technical Details:
- Hard Disk Model: SEAGATE ST9640320AS
- Disk Family: Momentus 5400.7 640320
- 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: 8192 KB
- Drive Ready Time (typical): 3.6 seconds
- Average Seek Time: 13 ms
- Track To Track Seek Time: 1.5 ms
- Full Stroke Seek Time: 27 ms
- Width: 69.85 mm (2.75 inch)
- Depth: 100.35 mm (3.95 inch)
- Height: 9.5 mm (0.37 inch)
- Weight: 100 grams (0.22 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 ST9640320AS Hard Drives:
- Seagate ST9640320AS, 5400RPM, 3.0Gp/s, 640GB SATA 2.5″ HDD
- ST9640320AS, 5WX, WU, PN 9RN134-021, FW 0002HPM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-030, FW 0001DEM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-020, FW 0001HPM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-140, FW 0001SDM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-189, FW 0001SDM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-030, FW 0002DEM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-286, FW 0002SDM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-500, FW 0001SDM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-285, FW 0001SDM1, Seagate 640GB SATA 2.5″ Hard Drive
- ST9640320AS, 5WX, WU, PN 9RN134-567, FW 0002BSM2, Seagate 640GB SATA 2.5″ Hard Drive
Seagate ST9640320AS 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 ST9640320AS Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Seagate ST9640320AS 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:
100588318, 100588584, 100588580, 100603256, etc.