ST91000640SS Seagate 2.5″ hard drive with a storage capacity of 1TB and featuring a SAS interface. HDD-ST91000640SS Supermicro HDD-ST91000640SS 1 TB 2.5 Internal Hard Drive 6Gb/s SAS 7200 rpm 64 MB Buffer.
All information about the Seagate ST91000640SS hard disk drive: technical parameters, failure symptoms, free asked questions, reviews, HDD repair and data recovery.
Seagate ST91000640SS Technical Details:
- Hard Disk Model: SEAGATE ST91000640SS
- Disk Family: Constellation.2 SAS 1000640
- Form Factor: 2.5″
- Capacity: 1 TB (1 x 1 000 000 000 000 bytes)
- Number Of Disks: 4
- Number Of Heads: 8
- Rotational Speed: 7200 RPM
- Rotation Time: 8.33 ms
- Average Rotational Latency: 4.17 ms
- Disk Interface: SAS
- Buffer-Host Max. Rate: 600 MB/seconds
- Buffer Size: 65536 KB
- Drive Ready Time (typical): 20 seconds
- Average Seek Time: 8.5 ms
- Track To Track Seek Time: 0.7 ms
- Full Stroke Seek Time: 16.96 ms
- Width: 70 mm (2.76 inch)
- Depth: 100.5 mm (3.96 inch)
- Height: 14.8 mm (0.58 inch)
- Weight: 200 grams (0.44 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 ST91000640SS Hard Drives:
- ST91000640SS, 9RZ, KRATSG, PN 9RZ268-150, FW AS09, Seagate 1TB SAS 2.5″ Hard Drive
- ST91000640SS, 9XG, KRATSG, PN 9RZ268-035, FW HPD8, HP 1TB SAS 2.5″ Hard Drive
Seagate ST91000640SS 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 ST91000640SS Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Seagate ST91000640SS 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:
100550348, etc.