IBM System Storage Ideas Portal


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Status Future consideration
Workspace Tape - High End Virtualization
Created by Guest
Created on Jul 5, 2024

RELATED IDEAS

Implement the possibility to balance host I/O throttling on cache partition level

When TS7700 runs into host I/O throttling, this throttling is equal across all CPx partitions today.

Since work load on different CPx may have higher or lower priority in the business/application context, it is required to have the possibility to balance / shift this throttling on customer's side, e.g. to assign 80% throttling for CP1 and only 20% of it to CP2, where the sum over all CPx is always 100%.

Since throttling today is expressed in delay between I/O, higher priority for host I/O should result in smaller number for PMT/CPYT, and lower priority should result in higher number(s).

Overall throttling may still remain the same, but certain CPx must be able to prioritize in throughput.

CACHE2 output is listing already individual values for PMT + CPYT, but they all have the same value(s).

Idea priority High

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