Time dependent service level objectives

A method of processing I/O operations comprising:

• issuing, by a process of an application on a host, an I/O operation;
• tagging the I/O operation with a tag value in accordance with a process name associated with the process that issued the I/O operation;
• sending the I/O operation from the host to a data storage system;
• and
• determining, on the data storage system, a service level objective for the I/O operation in accordance with the tag value of the I/O operation;
• receiving the I/O operation at the data storage system;
• and
• responsive to receiving the I/O operation, performing first processing that determines the service level objective for the I/O operation in accordance with the tag value of the I/O operation, wherein a table includes entries of process names and, for each process name, an associated tag value and one or more associated service level objective-time frame pairs, and wherein the table includes a first entry for the process name and the first processing further comprises:
• determining, using the table and the tag value of the I/O operation, at least one associated service level objective-time frame pair, wherein the at least one associated service level object-time frame pair specifies a service level that is active or effective or the process name at particular points in time in accordance with time-specific criteria.

A system comprising:

• at least one processor;
• and
• a memory comprising code stored therein that, when executed by the at least one processor, performs a method of processing I/O operations comprising:
• issuing, by a process of an application on a host, an I/O operation;
• tagging the I/O operation with a tag value, wherein the tag value is determined in accordance with a process name associated with the process that issued the I/O operation, and wherein said tagging includes storing the tag value in the I/O operation;
• sending the I/O operation including the tag value from the host to a data storage system;
• and
• determining, on the data storage system, a service level objective for the I/O operation in accordance with the tag value included in the I/O operation.

A computer readable medium comprising code stored thereon that, when executed, performs a method of processing I/O operations comprising:

• issuing, by a process of an application on a host, an I/O operation;
• tagging the I/O operation with a tag value, wherein the tag value is determined in accordance with a process name associated with the process that issued the I/O operation, and wherein said tagging includes storing the tag value in the I/O operation;
• sending the I/O operation including the tag value from the host to a data storage system;
• and
• determining, on the data storage system, a service level objective for the I/O operation in accordance with the tag value included in the I/O operation.