PATENT CLAIM ANALYSIS

Application Number: 15877405
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["711", "162000"]

Abstract:
A multi-node data storage system comprises a first data storage system having an owner node and a backup node in a first location coupled to a second data storage system having an owner node and a backup node in a second location. Each storage system includes a copy of the same data volume. A failure of a node of the multi-node storage system is detected. An outstanding write request to the first storage system is identified. If the owner node in the first storage system fails, it is determined whether the outstanding write corresponds to a host write to the backup node of the first storage system. If so, a retransmission message is sent to the second storage system. Otherwise, the data region associated with the outstanding write request is read from the first storage system, and a resynchronization message is sent to the second storage system.

Claim (Index 7):
The method of  claim 1 , further comprising:\n receiving a write request message, wherein the type of write request message comprises one of a resynchronization message and a retransmission message sent following failure of a node of the multi-node data storage system, wherein the write request message is received by the second data storage system from the first data storage system and comprises an indicator of the message type, the data to be written and the region in the data volume where the data is to be written; determining whether there is an outstanding write request to the second data storage system that corresponds to the region of the data volume in the received message; wherein, if there is an outstanding write request to the first data storage system that corresponds to the region of the data volume in the received message, the method further comprises:\n determining whether the write of the received write request message is the same type as the outstanding write request, and \n if the write of the received write request message is the same type as the outstanding write request, writing the data associated with a predetermined one of the first and second data storage systems to the region in the data volume of the second data storage system last, or \n if the write of the received write request message is not the same type as the outstanding write request, writing the data associated with the retransmission message to the region in the data volume of the second data storage system after writing the data associated with the resynchronization message.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 86.0
- Lexical Diversity: 2.92593
- Patent Class: 711.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15598362', '12695250', '11415689', '14509471', '10674872']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.507627865022438
- 35 USC 102 Novelty (BERT): 0.4973686373125258
- Combined Prediction Score: 0.5066019422514467
- Mean Citation Score: 197.024912
- Max Citation Score: 251.55624
- Similarity Product: 181.34921725773808

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

Dataset: test