Hi all,
We have an FMC appliance deployed in VMWare for managing FTD clusters. However, the system intermittently displays the following warning "High Disk Space Utilization". In general, FMC GUI can take up to 30 seconds to load when you log in and reloads equally take longer too.
After several search online, I found a resource on https://www.speaknetworks.com/cisco-firepower-high-disk-space-utilization/, Through this guidance, I have been able to query the appliance to verify disk volumes usage (see below)
| File System | Type | Size | Used | Available | Used % | Mounted on |
| /dev/sda5 | ext4 | 3.9G | 1.5G | 2.2G | 41% | / |
| none | devtmpfs | 17G | 32M | 17G | 1% | /dev |
| /dev/sda1 | ext4 | 91M | 38M | 47M | 45% | /boot |
| /dev/sda7 | ext4 | 256G | 35G | 208G | 15% | /var |
| none | tmpfs | 17G | 177K | 17G | 1% | /dev/shm |
| tmpfs | tmpfs | 17G | 0 | 17G | 0% | /sys/fs/cgroup |
| tmpfs | tmpfs | 17G | 0 | 17G | 0% | /sys/fs/cgroup/pm |
As mentioned on the website, "The system generates warning when any directory is 85% utilized and critical when it reaches 90%." As you can see on the attached image, none of the volumes exceed that level.
I thought I'd post this here to get your views or if you may have come across a similar issue in the past
