On-line-Ersetzen eines Moduls in einer Datenverarbeitungsanlage mit mehreren Modulen

摘要

A method for providing on-line replacement of a module (11) which is at a specified position in an array (10) of modules connected to a common control processor so that all other modules in the array can continue operating during the replacement operation. When the module is removed an indication is provided to the control processor showing that removal has occurred and identifying the position thereof. When the replacement has occurred an indication thereof is provided to the control processor, the replacement module is tested, and the state of the replacement module is updated to place it in the same state it would have been in if it had not been replaced. These indications are given by fingers (40, 42, 45) and pins (41, 43, 44, 46) associated with the backplane connector for the module, which make selective connection as the connector is removed and replaced.