Preservation of error information via staging buffer
Original Publication Date: 2001-Mar-01
Included in the Prior Art Database: 2003-Jun-18
Disclosed is a system including means for preserving information via a staging buffer. In a storage subsystem, in the event of a failure, it is important to capture as much information as possible at the first occurence. The data to be recorded can run to many megabytes. If this data can be recorded at the first occurrence of the problem it alleviates the necessity to reproduce the problem and thus reduces customer down time. Current adapters solve this problem by writing this data to external data storage (disk drive) at the time of the problem. The adapter is then reinitialised and customer operations are resumed. However if the external data storage is inaccessible at the time when the data is to be stored it must be discarded and the information is lost. If the external data storage is unavailable at the time of the problem, this invention ensures that the dump data persists until the external data storage becomes available.