Up to 7% of a Flash storage device’s listed capacity can be used for internal functions, and therefore is not user accessible. This is common in all Flash storage devices from all manufacturers. For example, a 32GB Flash storage device may only have 30-31GB actual writable data storage available to the consumer.
Flash storage devices are manufactured in this way to ensure the device operates dependably and in a timely reliable manner. Some of the data capacity is used for firmware, spare blocks and formatting, while other operations in the device may include:
- Testing of storage capacity within the Flash storage device.
- Identification of storage cells that have used up their lifecycle to ensure data is not stored to those locations on the device.
- Additional special features such as security or copy protection.
If you have any additional questions or would like any more information about Delkin Devices products, please reach out to us at WebDelkin@delkin.com.