Active/active (also called dual active) is a storage array configuration in which two (or more) storage controllers work together to process inputs/outputs (I/Os). Active/active can be contrasted with active/passive, an array configuration in which the first controller processes all I/O requests and the second controller is only used in the event of a failover.
Active/active vs. active/passive arrays
Storage expert Greg Schulz outlines the pros an...(SearchStorage.com)
- Active-active array vs active-passive array: Storage arrays explained (ComputerWeekly.com)