I'm curious to hear opinions on how accurate people are finding the forecasts.
Kevin
if your growth is linear and predictable then the forecasting can track that, erratic and sudden changes can't really be predicted by looking at historical data.
In my experience 90% of outages where I've been occur due to unexpected growth because we long ago got used to running cleanup scripts and rotating log files and all that obvious stuff. Things like a database change that causes the log drive to explode are what I run into and often you go from working fine, to 100% and locked up in under 30 min.
Given the abstraction layers in modern IT, I almost don't care to know about drive utilization on individual disks. I just need to know what my capacity utilization looks like at the SAN or what my cloud storage bill is costs.
