HGST HDE721064SLA330 3.5″ hard drive with a storage capacity of 640GB and featuring a SATA interface.
All information about the HGST HDE721064SLA330 hard disk drive: technical parameters, failure symptoms, frequently asked questions, reviews, HDD repair and data recovery.
HGST HDE721064SLA330 Technical Details:
Manufacturer:
HGST (Hitachi Global Storage Technologies)
Hard Disk Model:
HDE721064SLA330
Disk Family:
Ultrastar A7K1000 (Enterprise series)
Form Factor:
3.5″
Capacity:
640 GB (640,000,000,000 bytes)
Formatted Capacity:
Approximately 596 GB
Number Of Disks:
2
Number Of Heads:
3 (Single-surface skipped on one platter)
Rotational Speed:
7200 RPM
Average Seek Time:
8.2 ms (read) / 9.2 ms (write)
Disk Interface:
Serial ATA-300 (SATA 3 Gb/s)
Buffer Size:
16384 KB (16 MB)
External Transfer Rate:
300 MB/s
Internal Transfer Rate:
Up to 117 MB/s
Mean Time Between Failures (MTBF):
1,200,000 hours
Advanced Format:
512n (native 512-byte sectors)
HGST HDE721064SLA330 Hard Drives:
- HDE721064SLA330 – 640 GB SATA 3.5″ Enterprise Hard Drive, Ultrastar A7K1000 series
HGST HDE721064SLA330 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
HGST HDE721064SLA330 Data Recovery & HDD Repair:
When it comes to data recovery one of the most common problems HGST HDE721064SLA330 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 0A58786, etc.