Hi,

we have an MD3620F, dual controller, which we have updated the firmware to the latest version available in the DELL website.

Details below : 

Current configuration
Firmware version: 08.20.24.60

Appware version: 08.20.24.60

Bootware version: 08.20.24.60

NVSRAM version: N26X0-820890-908

Ever since the update, the system has been performing very poorly. wWe noticed that the virtual disks write cache is suspended as seen below:

Read cache: Enabled

Write cache: Enabled (currently suspended)

Write cache without batteries: Disabled

Write cache with mirroring: Enabled (currently suspended)

The system is marking everything as optimal and batteries are o.k

We have reset the controllers one by one and even performed a whole system shutdown. The problem is still there.

If we tick the box to enable Write cache without batteries, the system performs normally.

We also did a mass disable and enable of both read and write cache.

Any help in resolving this would is appreciated as we have run out of ideas.

Thanks in advance