Reducing stable data eviction with synthetic baseline snapshot and eviction state refresh
AssigneeNetApp, Inc.
InventorsAjay Pratap Singh Kushwah, Ling Zheng, Sharad Jain
Life of this patent
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AssigneeNetApp, Inc.
InventorsAjay Pratap Singh Kushwah, Ling Zheng, Sharad Jain
Estimating the term…
With a forever incremental snapshot configuration and a typical caching policy (e.g., least recently used), a storage appliance may evict stable data blocks of an older snapshot, perhaps unchanged data blocks of the snapshot baseline. If stable data blocks have been evicted, restore of a recent snapshot will suffer the time penalty of downloading the stable blocks for restoring the recent snapshot. Creating synthetic baseline snapshots and refreshing eviction data of stable data blocks can avoid eviction of stable data blocks and reduce the risk of violating a recovery time objective.
A method comprising:
One or more non-transitory machine-readable media comprising program code to reduce stable snapshot data eviction, the program code to:
An apparatus comprising:
Dependencies are inferred from the claim text.