ST9320421AS Seagate 2.5″ hard drive with a storage capacity of 320GB and featuring a SATA interface. ST9320421AS Seagate Momentus 320GB 7200RPM SATA 3GB/s 2.5-inch 16MB Cache Internal Hard DISK DR.
All information about the Seagate ST9320421AS hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.
Seagate ST9320421AS Technical Details:
- Hard Disk Model: SEAGATE ST9320421AS
- Disk Family: Momentus 7200.3 320421
- Form Factor: 2.5″
- Capacity: 320 GB (320 x 1 000 000 000 bytes)
- Number Of Disks: 2
- Number Of Heads: 4
- Rotational Speed: 7200 RPM
- Rotation Time: 8.33 ms
- Average Rotational Latency: 4.17 ms
- Disk Interface: Serial-ATA/300
- Buffer-Host Max. Rate: 300 MB/seconds
- Buffer Size: 16384 KB
- Width: 69.85 mm (2.75 inch)
- Depth: 100.5 mm (3.96 inch)
- Height: 9.5 mm (0.37 inch)
- Weight: 110 grams (0.24 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 ST9320421AS Hard Drives:
- ST9320421AS, 5TJ, WU, PN 9GE144-188, FW SD13, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421AS, 5TJ, WU, PN 9GE144-500, FW SD13, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-034, FW DE16, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421AS, 5TJ, WU, PN 9GE144-286, FW SD14, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421AS, 5TJ, WU, PN 9GE144-285, FW SD13, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-035, FW DE17, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-033, FW DE14, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-031, FW DEA2, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421AS, 5TJ, WU, PN 9GE144-020, FW HP15, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-500, FW SD13, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, PN 9GEG44-040, FW AP15, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421AS, 5TJ, WU, PN 9GE144-135, FW SD14, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421AS, 5TJ, WU, PN 9GE144-300, FW SD13, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-041, FW AP81, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421AS, 5TJ, WU, PN 9GE144-070, FW LV14, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-040, FW AP15, Seagate 320GB SATA 2.5″ Hard Drive
- ST9320421ASG, 5TJ, WU, PN 9GEG44-032, FW DE13, Seagate 320GB SATA 2.5″ Hard Drive
Seagate ST9320421AS 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 ST9320421AS Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Seagate ST9320421AS 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:
100513573, etc.