# HDD Detect

The HDD detect function is to detect HDD current status so that you can clearly
understand the HDD performance and replace the malfunction HDD.

There are two detect types:

* Quick detect is to detect via the universal system files.
    System can quickly complete the HDD scan.
    If you want to use this function, please make sure the HDD is in use now.
    If the HDD is removed from other device,
    please make sure the write-data once was full after it installed on current device.
* Global detect adopts Windows mode to scan.
    It may take a long time and may affect the HDD that is recording.