Storage control system with improved system and technique for de

Details Storage control system with improved system and technique for de Storage control system with improved system and technique for de

1992-12-17

1995-04-04

Canney, Vincent P.

395425, G06F 1100

Patent

active

054045002

ABSTRACT:
Improved system for destaging data from a nonvolatile memory. The system is operative after a failure of an associated first cache memory for which the nonvolatile memory stores backup data. The invention is adapted to scan the nonvolatile memory to identify control data stored therein. Next a directory structure is built from control information in the nonvolatile memory which is used to provide rapid access to data stored therein. In a particular implementation, the directory structure is stored as a plurality of pointers in data storage space allocated in a second cache. Data may then be destaged from the nonvolatile memory in a more efficient manner by which records from a particular track are grouped together.

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