Oncommand Manager, CLI is great, Separating storage into separate SVMs, LIF management, native CIFS and NFS support, domain integration, the list could go on.
The Powershell SDK has an interesting feature that if you are writing a script and pass an incorrect volume/file name it reads it as a wildcard for all volumes instead of reading a null variable and failing. Not anything with the SAN itself, but with their SDK.
Get your training in. These are beasts of products, but well worth it.
We deliver high-quality storage at a very reasonable price. We are able to integrate our DR directly into our NetApp clusters and have migrated all server based file-shares to native net-app based files hares.