Distributed service level objective management in active-active environments

摘要

Techniques are described for determining I/O workload. A first device of a first data storage system and a second device of a second data storage system are configured as synchronous mirrored devices of a first logical device. The host issues I/O operations to the first logical device over first and second paths. First I/O workload information is determined for a first data portion of the first logical device. Second I/O workload information is determined for the first data portion. The first I/O workload information and the second I/O workload information each include a first number of read operations that is a sum of read operations directed to the first logical device over both the first path and the second path. Data storage optimizations are performed on the first data storage system using the first I/O workload information and/or the second data storage system using the second I/O workload information.

主权项

1. A method of determining I/O workload comprising:
configuring a first data storage system to have a first device and a second data storage system to have a second device, wherein the first device is accessible to a host over a first path between the host and the first data storage system, wherein the second device is accessible over a second path between the host and the second data storage system, wherein the first device and the second device are configured as synchronous mirrored devices of a first logical device, and wherein the host issues I/O operations to the first logical device over the first path and the second path; determining first I/O workload information on the first data storage system for a first data portion of the first logical device; determining second I/O workload information on the second data storage system for the first data portion of the first logical device, wherein the first I/O workload information and the second I/O workload information each include a first number of read operations that is a sum of read operations directed to the first logical device over both the first path and the second path; and performing data storage optimizations on any of the first data storage system using the first I/O workload information and the second data storage system using the second I/O workload information.