Writing data to lower performance storage tiers of a multi-tier storage system
View Patent ↗Efficient writing to lower-performance storage tiers of a multi-tier storage system evaluates user intention when determining a write process that ultimately writes target data to a priority storage tier according to the user intention. Temporary high-performance storage tiers serve as coordinator tiers to achieve the efficient writing process for writing substantial or massive datasets to local storage.
1. A computer-implemented method comprising:
identifying a logical dataset of storage in a multi-tier storage system;
setting up a logical configuration map of the logical dataset and a priority storage tier having a first performance level;
selecting a coordinator storage tier having a second performance level in the multi-tier storage system;
comparing the first performance level of the priority storage tier to the second performance level; and
performing a write process according to the relative performance level of the first performance level with respect to the second performance levels.
2. The method of claim 1 , further comprising:
identifying a user-based storage priority for the logical dataset; and
establishing the priority storage tier for the logical dataset according to a reference table assigning user-based storage priority levels to performance levels of the multi-tier storage system.
3. The method of claim 1 , wherein:
the first performance level is lower than the second performance level.
4. The method of claim 3 , further comprising:
allocating a physical memory chunks to both the priority tier and the coordinator tier;
building an extended logical configuration mapping for the logical dataset, the priority tier allocation, and the coordinator tier allocation;
writing the logical dataset to the coordinator tier according to the allocation;
copying the logical dataset from the coordinator tier to the priority tier; and
responsive to the copying being completed, releasing the physical chunk allocation from the coordinator tier.
5. The method of claim 1 , further comprising:
establishing a set of write details related to the logical dataset, the write details including the priority storage tier and a default storage tier having a third performance level.
6. The method of claim 5 , further comprising:
comparing the first performance level to the third performance level; and
responsive to the first performance level being equivalent to the third performance level, allocating the physical memory chunk to the default storage tier; and
writing the logical dataset to the default storage tier.
7. A computer program product comprising a computer-readable storage medium having a set of instructions stored therein which, when executed by a processor, causes the processor to perform a method comprising:
identifying a logical dataset of storage in a multi-tier storage system;
setting up a logical configuration map of the logical dataset and a priority storage tier having a first performance level;
selecting a coordinator storage tier having a second performance level in the multi-tier storage system;
comparing the first performance level of the priority storage tier to the second performance level; and
performing a write process according to the relative performance level of the first performance level with respect to the second performance levels.
8. The computer program product of claim 7 , further causing the processor to perform a method comprising:
identifying a user-based storage priority for the logical dataset; and
establishing the priority storage tier for the logical dataset according to a reference table assigning user-based storage priority levels to performance levels of the multi-tier storage system.
9. The computer program product of claim 7 , wherein:
the first performance level is lower than the second performance level.
10. The computer program product of claim 9 , further causing the processor to perform a method comprising:
allocating a physical memory chunks to both the priority tier and the coordinator tier;
building an extended logical configuration mapping for the logical dataset, the priority tier allocation, and the coordinator tier allocation;
writing the logical dataset to the coordinator tier according to the allocation;
copying the logical dataset from the coordinator tier to the priority tier; and
responsive to the copying being completed, releasing the physical chunk allocation from the coordinator tier.
11. The computer program product of claim 7 , further causing the processor to perform a method comprising:
establishing a set of write details related to the logical dataset, the write details including the priority storage tier and a default storage tier having a third performance level.
12. The computer program product of claim 11 , further causing the processor to perform a method comprising:
comparing the first performance level to the third performance level; and
responsive to the first performance level being equivalent to the third performance level, allocating the physical memory chunk to the default storage tier; and
writing the logical dataset to the default storage tier.
13. A computer system comprising:
a processor set; and
a computer readable storage medium;
wherein:
the processor set is structured, located, connected, and/or programmed to run program instructions stored on the computer readable storage medium; and
the program instructions which, when executed by the processor set, cause the processor set to perform a method comprising:
identifying a logical dataset of storage in a multi-tier storage system;
setting up a logical configuration map of the logical dataset and a priority storage tier having a first performance level;
selecting a coordinator storage tier having a second performance level in the multi-tier storage system;
comparing the first performance level of the priority storage tier to the second performance level; and
performing a write process according to the relative performance level of the first performance level with respect to the second performance levels.
14. The computer system of claim 13 , further causing the processor to perform a method comprising:
identifying a user-based storage priority for the logical dataset; and
establishing the priority storage tier for the logical dataset according to a reference table assigning user-based storage priority levels to performance levels of the multi-tier storage system.
15. The computer system of claim 13 , wherein:
the first performance level is lower than the second performance level.
16. The computer system of claim 15 , further causing the processor to perform a method comprising:
allocating a physical memory chunks to both the priority tier and the coordinator tier;
building an extended logical configuration mapping for the logical dataset, the priority tier allocation, and the coordinator tier allocation;
writing the logical dataset to the coordinator tier according to the allocation;
copying the logical dataset from the coordinator tier to the priority tier; and
responsive to the copying being completed, releasing the physical chunk allocation from the coordinator tier.
17. The computer system of claim 13 , further causing the processor to perform a method comprising:
establishing a set of write details related to the logical dataset, the write details including the priority storage tier and a default storage tier having a third performance level.
18. The computer system of claim 17 , further causing the processor to perform a method comprising:
comparing the first performance level to the third performance level; and
responsive to the first performance level being equivalent to the third performance level, allocating the physical memory chunk to the default storage tier; and
writing the logical dataset to the default storage tier.