This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
STOR2RRD - Free SAN and storage performance and capacity monitoring
The tool offers you end-to-end views of your storage environment
including NAS and SAN and can save you significant money in operation
monitoring and by predicting utilization bottlenecks in your virtualized
environment. You can also generate policy-based alerts, view overall health status of
your systems, provide capacity reports and forecasting data.
Download the tool here or checkout a more comprehensive list of tools here.