NetApp ONTAP 7-mode: High Write Latency alarms but normal CPU usage, IOPS and network bandwidth

This report has been written due to a number of write latency related bugs I’ve witnessed in recent versions on ONTAP 7-mode. It’s a modified version of an internal report that I wrote up in some free time. I thought I’d summarise my findings in case others are seeing similar issues.

Servlets not enabled – Error 500 – NetApp

Very brief issue I had with a Lab NetApp Filer last night.


If you try to log on to http://filer/na_admin/ you see: Error 500, Servlets not enabled

To fix the problem:

Re-install the OnTap software

Ta-daa 😉