PATENT CLAIM ANALYSIS

Application Number: 16123738
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-08
Patent Classification: ["710", "068000"]

Abstract:
A storage apparatus and method of controlling same which, while preventing depletion of a storage area due to the generation of garbage, also prevent a drop in response performance from the perspective of the host, are proposed. One or more storage devices which constitute a pool, and a controller which manages a log-structured write space which is a virtual logical space, compresses data of a compression target among the data which has been written to the virtual volume by the host and logs the data in the log-structured write space, and writes the post-compression data which has been logged in the log-structured write space to the storage device, are provided in a storage apparatus, the controller restricting reception of a write request from the host when a used capacity of the pool is at or above a threshold; when the data logged in the log-structured write space has been updated, the controller determines whether a predetermined condition is satisfied and, when the predetermined condition is satisfied, the controller overwrites the compressed data of the pre-update data which has been logged in the log-structured write space with the compressed data of the post-update data.

Claim (Index 1):
A storage apparatus which provides a virtual volume which is a virtual storage space to a host, comprising:\n one or more storage devices which constitute a pool; and a controller which manages a log-structured write space which is a virtual logical space, compresses data of a compression target among the data which has been written to the virtual volume by the host and logs the data in the log-structured write space, and writes the post-compression data which has been logged in the log-structured write space to the storage device, wherein, when a used capacity of the pool is at or above a threshold, the controller restricts reception of a write request from the host, and wherein, if a predetermined condition is satisfied when the data logged in the log-structured write space has been updated, the controller overwrites the compressed data of the pre-update data which has been logged in the log-structured write space with the compressed data of the post-update data.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 97.0
- Lexical Diversity: 2.49398
- Patent Class: 710.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15759842', '15557967', '13611100', '14762955', '12310107']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.685113910092312
- 35 USC 102 Novelty (BERT): 0.5014249674148337
- Combined Prediction Score: 0.6667450158245642
- Mean Citation Score: 237.27214
- Max Citation Score: 272.0548
- Similarity Product: 192.0196660713196

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