US 12,748,667 B2Granted

Tiering-aware snapshotting for multiple-tier storage systems

AssigneeDell Products L.P.

InventorWeibing Zhang

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Abstract

An apparatus comprises at least one processing device configured to determine, for a given portion of data of a tiering-aware snapshot that is to be restored to a target storage system comprising a set of two or more storage tiers, tiering information characterizing a given storage tier in which the given portion of data was stored when the tiering-aware snapshot was taken. The at least one processing device is also configured to select, based at least in part on the determined tiering information and storage tier mapping policies mapping the given storage tier to the set of two or more storage tiers of the target storage system, one of the storage tiers of the target storage system. The at least one processing device is further configured to restore the tiering-aware snapshot to the target storage system by storing the given portion of data in the selected storage tier.

Claims20

Dependent claims

An apparatus comprising:

at least one processing device comprising a processor coupled to a memory;
the at least one processing device being configured:
to determine, for a given portion of data of a tiering-aware snapshot that is to be restored to a target storage system, tiering information characterizing a given one of a first set of two or more storage tiers of a source storage system in which the given portion of data was stored when the tiering-aware snapshot was taken on the source storage system;
to select, based at least in part on (i) the determined tiering information characterizing the given storage tier of the source storage system in which the given portion of data was stored when the tiering-aware snapshot was taken on the source storage system and (ii) one or more storage tier mapping policies mapping the given storage tier of the source storage system to a second set of two or more storage tiers of the target storage system, one of the storage tiers in the second set of two or more storage tiers of the target storage system in which to store the given portion of data when restoring the tiering-aware snapshot to the target storage system;
and
to restore the tiering-aware snapshot to the target storage system by storing the given portion of data in the selected one of the storage tiers in the second set of two or more storage tiers of the target storage system;
wherein the first set of two or more storage tiers of the source storage system provide a first set of two or more different performance levels and the second set of two or more storage tiers of the target storage system provide a second set of two or more different performance levels;
and
wherein the one or more storage tier mapping policies map each storage tier in the first set of two or more storage tiers of the source storage system to one or more storage tiers in the second set of two or more storage tiers of the target storage system based at least in part on:
available capacity of storage tiers in the second set of two or more storage tiers;
and
matching the second set of two or more different performance levels of storage tiers in the second set of two more storage tiers of the target storage system with the first set of two or more different performance levels of storage tiers in the first set of two or more storage tiers of the source storage system.

9 more elements

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing device causes the at least one processing device:

to determine, for a given portion of data of a tiering-aware snapshot that is to be restored to a target storage system, tiering information characterizing a given one of a first set of two or more storage tiers of a source storage system in which the given portion of data was stored when the tiering-aware snapshot was taken on the source storage system;
to select, based at least in part on (i) the determined tiering information characterizing the given storage tier of the source storage system in which the given portion of data was stored when the tiering-aware snapshot was taken on the source storage system and (ii) one or more storage tier mapping policies mapping the given storage tier of the source storage system to a second set of two or more storage tiers of the target storage system, one of the storage tiers in the second set of two or more storage tiers of the target storage system in which to store the given portion of data when restoring the tiering-aware snapshot to the target storage system;
and
to restore the tiering-aware snapshot to the target storage system by storing the given portion of data in the selected one of the storage tiers in the second set of two or more storage tiers of the target storage system;
wherein the first set of two or more storage tiers of the source storage system provide a first set of two or more different performance levels and the second set of two or more storage tiers of the target storage system provide a second set of two or more different performance levels;
and
wherein the one or more storage tier mapping policies map each storage tier in the first set of two or more storage tiers of the source storage system to one or more storage tiers in the second set of two or more storage tiers of the target storage system based at least in part on:
available capacity of storage tiers in the second set of two or more storage tiers;
and
matching the second set of two or more different performance levels of storage tiers in the second set of two more storage tiers of the target storage system with the first set of two or more different performance levels of storage tiers in the first set of two or more storage tiers of the source storage system.

7 more elements

A method comprising:

determining, for a given portion of data of a tiering-aware snapshot that is to be restored to a target storage system, tiering information characterizing a given one of a first set of two or more storage tiers of a source storage system in which the given portion of data was stored when the tiering-aware snapshot was taken on the source storage system;
selecting, based at least in part on (i) the determined tiering information characterizing the given storage tier of the source storage system in which the given portion of data was stored when the tiering-aware snapshot was taken on the source storage system and (ii) one or more storage tier mapping policies mapping the given storage tier of the source storage system to a second set of two or more storage tiers of the target storage system, one of the storage tiers in the second set of two or more storage tiers of the target storage system in which to store the given portion of data when restoring the tiering-aware snapshot to the target storage system;
and
restoring the tiering-aware snapshot to the target storage system by storing the given portion of data in the selected one of the storage tiers in the second set of two or more storage tiers of the target storage system;
wherein the first set of two or more storage tiers of the source storage system provide a first set of two or more different performance levels and the second set of two or more storage tiers of the target storage system provide a second set of two or more different performance levels;
wherein the one or more storage tier mapping policies map each storage tier in the first set of two or more storage tiers of the source storage system to one or more storage tiers in the second set of two or more storage tiers of the target storage system based at least in part on:
available capacity of storage tiers in the second set of two or more storage tiers;
and
matching the second set of two or more different performance levels of storage tiers in the second set of two more storage tiers of the target storage system with the first set of two or more different performance levels of storage tiers in the first set of two or more storage tiers of the source storage system;
and
wherein the method is performed by at least one processing device comprising a processor coupled to a memory.

8 more elements

Dependencies are inferred from the claim text.