Refurbishing procedure for pre-owned hard drives
All pre-owned / previously installed hard drives that are sold by DiscounTechnology go through a vigorous testing process that not only determines the quality of the product but also removes any previous data that may have been on the drive.
The testing process determines the quality of the drive by performing the following:
- Block level read/write functionality with data comparison across all blocks
- Low level formatting
- Determining the existence of grown defects
- Random block read / write for disk head motion tests
- Log file power on hour check for condition level verification
The block level testing that we do is data destructive. This means that any existing data on the drive is completely removed due to the process of writing an incremental / decremental data pattern across all available blocks. This process is followed up by a format to re-initialize the disk back to it's factory setting.