PATENT CLAIM ANALYSIS

Application Number: 15913748
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["711", "130000"]

Abstract:
In one aspect of the present description, a primary-secondary role swap operation which swaps roles of primary and secondary data storage systems in a distributed data storage system, is synchronized with safe data commit scan operations of individual data storage systems. The safe data commit scan operations of the individual data storage systems are also synchronized to ensure completion of the safe data commit scans and to reduce the occurrence of reductions in input/output (I/O) response times prior to initiation of a primary-secondary role swap operation. Other features and aspects may be realized, depending upon the particular application.

Claim (Index 16):
A system, comprising:\n a plurality of data storage systems, each data storage system having a storage controller and a data storage unit controlled by a storage controller and configured to store data, wherein the storage controller of each data storage system has a processor and a cache wherein the plurality of data storage systems include a first data storage system configured as a primary data storage system and a second data storage system configured as a secondary data storage system; and a computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor of a storage controller to cause processor operations, the processor operations comprising:\n synchronizing a first plurality of safe data commit scan operations in the plurality of data storage systems, each safe data commit scan operation destaging data cached in a cache of a data storage system to a data storage unit of a data storage system; \n receiving in the first data storage system a completion message indicating completion of the safe data commit scan operation in at least the second data storage system of the plurality of data storage systems; and \n in response to the completion message indicating completion of the safe data commit scan operation in at least the second data storage system, swapping roles of the first and second data storage systems such the second data storage system is reconfigured as a primary data storage system and the first data storage system is reconfigured as a secondary data storage system.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 90.0
- Lexical Diversity: 1.70968
- Patent Class: 711.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15842856', '15828302', '13694000', '15834864', '15368321']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4961231621796843
- 35 USC 102 Novelty (BERT): 0.4756194966537397
- Combined Prediction Score: 0.4940727956270899
- Mean Citation Score: 180.10636200000005
- Max Citation Score: 221.05023
- Similarity Product: 183.56984558307943

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test