The DBMS can then be restarted later with the information in the database intact and proceed as though the software had never stopped. Most DBMS can store the state of its database or databases to a file before being closed down (see database dump). A common example is a database management system (DBMS). It is often used to create persistence within an otherwise volatile system. On many systems a complete system image cannot be created by a disk cloning program running within that system because information can be held outside of disks and volatile memory, for example in non-volatile memory like boot ROMs.Ī process image is a copy of a given process's state at a given point in time.
If a system has all its state written to a disk, then a system image can be produced by simply copying that disk to a file elsewhere, often with disk cloning applications.
