I have 2 new servers with the exact same hardware running FreeNAS. There are 30 4TB drives in each enclosure. Each has the exact same zpool configuration (5x 5 4TB drive RAIDZ volumes, 3 spares, mirrored log drives, 72TB pool).
One server is benchmarking write at 1.25Gbps , and the other at around .7Gbps.
The reporting graphs show a different trend for CPU usage (10% more for the better performer) and for System Load (the worse performer spiking out and having higher load generally) , but approximately the same trend for Memory Utilization.
Both volumes show a healthy state, and everything about the configuration (hw & sw) is identical as it appears to me.
What could be causing this strange behavior, and how can I go about troubleshooting?