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 20):
A system for providing seamless migration of a source volume, comprising:\n a source storage array containing the source volume, the source storage array including memory storing instructions for execution on one or more processing units, and wherein the source storage array is configured and arranged to disable the source volume to prevent the source volume from being used to process standard host I/O requests, and to send a non-standard failure status code to a plurality of host computers that are located in a cluster that also includes the source storage array and a destination storage array; at least one of the host computers in the cluster configured and arranged to, in response to receipt of the non-standard failure status code, and while the source volume is disabled and prior to enabling a destination volume in the destination storage array to process host I/O requests, transfer persistent reservation information to the destination storage array, wherein the persistent reservation information indicates which ones of the host computers in the cluster are permitted to access the source volume; wherein the destination storage array is configured and arranged to, in response to a determination that the persistent reservation information has been successfully transferred to the destination storage array, enable the destination volume to process host I/O requests in accordance with the transferred persistent reservation information; and wherein each one of the host computers in the cluster is configured and arranged to, in response to a determination that the destination volume has been enabled to process host I/O requests, modify an active path for accessing the source volume to indicate the destination volume, wherein the modification of the active path for accessing the source volume causes the host computers in the cluster to send subsequent I/O requests that are directed to the source volume from the host computers in the cluster to the destination storage array for processing in the destination storage array using the destination volume.

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): 0.5326466298887452
- 35 USC 102 Novelty (BERT): 0.5056998394617528
- Combined Prediction Score: 0.529951950846046
- Mean Citation Score: 242.730118
- Max Citation Score: 278.63376
- Similarity Product: 195.6084788187217

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