Seagate ST2000NM0021 3.5″ hard drive with a storage capacity of 2 TB and featuring a SAS interface.
All information about the Seagate ST2000NM0021 hard disk drive: technical parameters, failure symptoms, frequently asked questions, reviews, HDD repair and data recovery.
Seagate ST2000NM0021 Technical Details:
Manufacturer:
Seagate
Hard Disk Model:
ST2000NM0021
Disk Family:
Exos 7E2000 (Enterprise SAS)
Form Factor:
3.5″
Capacity:
2 TB (2,000,000,000,000 bytes)
Formatted Capacity:
Approximately 1.81 TB
Rotational Speed:
7200 RPM
Average Seek Time:
8.5 ms (read) / 9.5 ms (write)
Disk Interface:
SAS 6 Gb/s (Serial Attached SCSI)
Buffer Size:
131072 KB (128 MB)
External Transfer Rate:
600 MB/s
Mean Time Between Failures (MTBF):
2,000,000 hours
Workload Rating:
550 TB/year
Seagate ST2000NM0021 Hard Drives:
- Seagate ST2000NM0021 Exos 7E2000 2 TB 3.5″ Internal Hard Drive SAS 6 Gb/s 7200 RPM 128 MB Buffer hard drive;
Seagate ST2000NM0021 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 ST2000NM0021 Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems Seagate ST2000NM0021 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 100638869 REV B, etc.