Failover and recovery for replicated data instances
US-2016210205-A1 · Jul 21, 2016 · US
Prompt and gradual migration schemes
US2023350594A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023350594-A1 |
| Application number | US-202318219547-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 7, 2023 |
| Priority date | Jun 15, 2020 |
| Publication date | Nov 2, 2023 |
| Grant date | — |
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Abstract
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Provided are mechanisms for promptly or gradually migrating data from a read-only disk in a storage system to a replacement disk, where, during gradual migration, data is migrated when it is requested of the read-only disk.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for migrating data in a storage system comprising a plurality of active extents and one or more replacement logical or physical drives, the method comprising: determining that an active extent of a storage system has entered read-only mode to become a read-only extent; determining, based on a storage policy, whether the storage system should promptly migrate data or gradually migrate data; based on determining that the storage system should promptly migrate data, copying data from the read-only extent to a replacement logical or physical drive as rapidly as possible; and based on determining that the storage system should gradually migrate data, upon receiving a read request for a data unit in the extent, copying the data unit from the read-only drive to the replacement logical or physical drive, and upon receiving a write request for a data unit in the read-only extent, writing the data unit to the replacement logical or physical drive.
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Classifications
- G06F3/0647Primary
Migration mechanisms · CPC title
in relation to availability · CPC title
by changing the state or mode of one or more devices · CPC title
Disk arrays, e.g. RAID, JBOD · CPC title
Degraded mode, e.g. caused by single or multiple storage removals or disk failures · CPC title
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Frequently asked questions
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- What does patent US2023350594A1 cover?
- Provided are mechanisms for promptly or gradually migrating data from a read-only disk in a storage system to a replacement disk, where, during gradual migration, data is migrated when it is requested of the read-only disk.
- Who is the assignee on this patent?
- Samsung Electronics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G06F3/0647. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Nov 02 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).