Shredding service processing

By default, the Shredding service uses three passes to overwrite the areas where the object data, secondary metadata, and custom metadata were stored. The three passes are applied to the entire object, repeating for each 128-KB block. Each pass has this pattern:

  • Set to a specified value (write the 0xAA pattern to the file)
  • Set to the complement of that value (write the 0x55 (~0xAA) pattern to the file)
  • Set to a random value (write a random value to every byte of the entire file)
  • Verify the value by reading it back

To use a different shredding algorithm, contact your authorized HCP service provider.