# Cold Backup

__*Cold backup*__

+ Occurs when the user is unable to access the data
+ Prevents you from doing anything about your data
+ Do not interfere with the performance of the system during system startup and operation

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Occurs when the user is unable to access the data
  Typically, the server is in inaccessible mode or completely shut down during a cold backup.
  You can't read or modify the data in any way while you back it up.

Prevents you from doing anything about your data

Do not interfere with the performance of the system during system startup and operation
  However, for some applications, it is unacceptable to have to lock down or completely block user access to data for an extended period of time.