Patent attributes
A system for image upgrade, according to one embodiment of the present invention comprises an upgrade director and a target device comprising a manager module. The upgrade director sends a first command to the manager module initiating an upgrade event. The manager module receives the first command. The manager module calculates a delay parameter. The manager module downloads an upgrade image after the delay parameter has ended. The upgrade director sends a second command to the manager module indicating that the upgrade event is to conclude. The manager module receives the second command from the upgrade director. The manager module reboots using the upgrade image responsive to the second command.