Techniques using I/O classifications in connection with determining data movements

A method of determining data movements comprising:

• receiving a first plurality of performance goals for a plurality of storage pools, wherein each of the first plurality of performance goals specifies a performance goal for one storage pool of the plurality of storage pools;
• receiving a second plurality of performance goals for a plurality of applications, wherein each of the second plurality of performance goals specifies a performance goal with respect to I/O operations directed to one or more logical devices used by one application of the plurality of applications;
• determining a first I/O classification characterizing a workload of a first data portion, wherein said first I/O classification is one of a predetermined set of I/O classifications;
• and
• determining a proposed data movement of the first data portion from a first of the plurality of storage pools to a second of the plurality of storage pools in accordance with criteria including a match between the first I/O classification and one of the predetermined set of I/O classifications which is preferred for said second storage pool over one or more other I/O classifications of the predetermined set and wherein said criteria also includes any of the first plurality of performance goals and the second plurality of performance goals, wherein each of the first plurality of performance goals specifying a performance goal for one storage pool of the plurality of storage pools includes a response time objective and one or more percentages, whereby each of the one or more percentages identifies a percentage of received I/O operations directed to the one storage pool expected to have an observed response time less than the response time objective.

A method of determining data movements comprising:

• receiving a first plurality of performance goals for a plurality of storage pools, wherein each of the first plurality of performance goals specifies a performance goal for one storage pool of the plurality of storage pools;
• receiving a second plurality of performance goals:
• for a plurality of applications, wherein each of the second plurality of performance goals specifies a performance goal with respect to I/O operations directed to one or more logical devices used by one application of the plurality of applications;
• determining a first I/O classification characterizing a workload of a first data portion, wherein said first I/O classification is one of a predetermined set of I/O classifications;
• and
• determining a proposed data movement of the first data portion from a first of the plurality of storage pools to a second of the plurality of storage pools in accordance with criteria including a match between the first I/O classification and one of the predetermined set of I/O classifications which is preferred for said second storage pool over one or more other I/O classifications of the predetermined set and wherein said criteria also includes any of the first plurality of performance goals and the second plurality of performance goals, wherein each of the second plurality of performance goals specifying a performance goal for one application of the plurality of applications includes a response time objective and one or more percentages, whereby each of the one or more percentages identifies a percentage of received I/O operations directed to one or more logical devices used by the one application expected to have an observed response time less than the response time objective.

A method of determining data movements comprising:

• receiving a first plurality of performance goals for a plurality of storage pools, wherein each of the first plurality of performance goals specifies a performance goal for one storage pool of the plurality of storage pools;
• receiving a second plurality of performance goals for a plurality of applications, wherein each of the second plurality of performance goals specifies a performance goal with respect to I/O operations directed to one or more logical devices used by one application of the plurality of applications;
• determining a first I/O classification characterizing a workload of a first data portion, wherein said first I/O classification is one of a predetermined set of I/O classifications;
• and
• determining a proposed data movement of the first data portion from a first of the plurality of storage pools to a second of the plurality of storage pools in accordance with criteria including a match between the first I/O classification and one of the predetermined set of I/O classifications which is preferred for said second storage pool over one or more other I/O classifications of the predetermined set and wherein said criteria also includes any of the first plurality of performance goals and the second plurality of performance goals, wherein a first of the applications includes data portions of a first logical device stored on physical storage devices of a first of the plurality of storage pools and a second of the plurality of storage pools, and a second of the plurality of applications includes data portions of a second logical device stored on physical storage devices of the first storage pool and the second storage pool, and wherein a first set of queues of data portions of the first application is maintained for the first storage pool for first application, a second set of queues of data portions of the first application is maintained for the second storage pool for the first application, a third set of queues of data portions of the second application is maintained for the first storage pool for second application, and a fourth set of queues of data portions of the second application is maintained for the second storage pool for the second application.

A method of determining data movements comprising:

• receiving a first plurality of performance goals for a plurality of storage pools, wherein each of the first plurality of performance goals specifies a performance goal for one storage pool of the plurality of storage pools;
• receiving a second plurality of performance goals for a plurality of applications, wherein each of the second plurality of performance goals specifies a performance goal with respect to I/O operations directed to one or more logical devices used by one application of the plurality of applications;
• determining a first I/O classification characterizing a workload of a first data portion, wherein said first I/O classification is one of a predetermined set of I/O classifications;
• and
• determining a proposed data movement of the first data portion from a first of the plurality of storage pools to a second of the plurality of storage pools in accordance with criteria including a match between the first I/O classification and one of the predetermined set of I/O classifications which is preferred for said second storage pool over one or more other I/O classifications of the predetermined set and wherein said criteria also includes any of the first plurality of performance goals and the second plurality of performance goals, and wherein the method further comprises:
• modeling expected performance of a set of one or more proposed data movements including the proposed data movement;
• implementing the set of one or more proposed data movements;
• obtaining a resulting set of performance data;
• and
• comparing the resulting set of performance data with the expected performance to determine an accuracy of said modeling.

A non-transitory computer readable medium comprising code stored thereon for determining data movements, the non-transitory computer readable medium comprising code, that when executed, performs a method comprising for:

• receiving a first plurality of performance goals for a plurality of storage tiers, wherein each of the first plurality of performance goals specifies a performance goal for one storage tier of the plurality of storage tiers, each of the plurality of storage tiers including physical storage devices of a different performance classification;
• receiving a second plurality of performance goals for a plurality of applications, wherein each of the second plurality of performance goals specifies a performance goal with respect to I/O operations directed to one or more logical devices used by one application of the plurality of applications;
• determining a first I/O classification characterizing a workload of a first data portion, wherein said first I/O classification is one of a predetermined set of I/O classifications in accordance with whether the workload includes more reads than writes, whether the workload includes more sequential or random data operations and whether the workload includes data operations of a size larger than a threshold size;
• and
• determining a proposed data movement of the first data portion from a first of the plurality of storage tiers to a second of the plurality of storage tiers in accordance with criteria including a match between the first I/O classification and one of the predetermined set of I/O classifications which is preferred for said second storage tier over one or more other I/O classifications of the predetermined set and wherein said criteria also includes any of the first plurality of performance goals and the second plurality of performance goals.