RAID & ZFS Performance Estimator

Honest steady-state estimates. Controller cache changes burst behaviour, not sustained IOPS — so the headline numbers are spindle-bound, and the card only adds a burst window and warnings. Edit the config block near the top of the file's script to drop in your own benchmark figures.

Drives

Number of drives

Drive type

Capacity per drive (TB)

RAID / ZFS level

Workload mix

read write

Block size

Controller

Virtual disk parameters — as set in the PERC create-VD screen

Strip element size

Read policy

Write policy

Disk cache

Cache behaviour over time — live simulation

Incoming write demand—