Oracle Database 12c – converting a Two-Way Mirrored Storage Pool to a Three-way Mirrored Storage Pool

A Three-way Mirror adds additional IOPS per stored block and higher level protection against failures

calibrate_io.sql – attempts to measure random I/O performance with two numbers: maximum number of IOPS and average latency at which it is measured

ORADATA with Three-way Mirror
Max IOPS=212717
Max MBps=1371
Latency =1

ORADATA with Two-way Mirror
Max IOPS=178370
Max MBps=1278
Latency =1

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