PATENT CLAIM ANALYSIS

Application Number: 15987459
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-10
Patent Classification: ["711", "165000"]

Abstract:
While migrating a source volume to a destination storage array, disabling the source volume causes a source storage array to send a non-standard failure status code to all host computers in a cluster that includes the source storage array and the destination storage array. While the source volume is disabled with regard to standard host I/O requests received from host computers in the cluster, in response to receipt of the non-standard failure status code, a customized plugin added to the host computers transfers persistent reservation information to the destination storage array using non-standard read and set persistent reservation information commands. The destination volume is then enabled to process host I/O requests in accordance with the transferred persistent reservation information, and an active path for accessing the source volume is modified in each one of the host computers in the cluster to indicate the destination volume in the destination storage array.

Claim (Index 2):
The method of  claim 1 , further comprising\n prior to disabling the source volume, sending a hold I/O message to all host computers in the cluster, wherein the hold I/O message causes the host computers in the cluster to stop issuing host I/O requests that are directed to the source volume to the source storage array and to instead create an internal queue in each one of the host computers in the cluster storing host I/O requests that are directed to the source volume; and in response to determining that the active path for accessing the source volume in each one of the host computers in the cluster has been modified to indicate the destination volume, sending a resume I/O message to all the host computers in the cluster, wherein the resume I/O message causes the host computers in the cluster to resume issuing host I/O requests that are directed to the source volume using the modified active path for accessing the source volume, including the host I/O requests directed to the source volume that are stored in the internal queue in each one of the host computers in the cluster.

Metadata:
- Claim Count in Document: 12.0
- Percentile: 93.0
- Lexical Diversity: 2.41538
- Patent Class: 711.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15370932', '13563628', '13535851', '13563622', '14752674']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5326327561002797
- 35 USC 102 Novelty (BERT): 0.5057736627528914
- Combined Prediction Score: 0.5299468467655408
- Mean Citation Score: 242.730118
- Max Citation Score: 278.63376
- Similarity Product: 195.3246337760067

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

Dataset: test