Description
This article explains how HD usage is divided on FortiGate.
Solution
The total HD usage can be found by running the command 'diagnose sys logdisk usage'.
# diagnose sys logdisk usage
Total HD usage: 29540MB/29540MB
Total HD logging space: 11250MB
HD logging space usage for vdom "1": 5875MB/10240MB
HD logging space usage for vdom "2": 7MB/256MB
HD logging space usage for vdom "3": 7MB/256MB
HD logging space usage for vdom "root": 10MB/256MB
Total HD Usage space is 29540MB
The disk space is divided into two parts:
- log-disk-quota
- wanopt storage
The current values can be displayed by running the following commands:
# show system resource-limits
config system resource-limits
set log-disk-quota 15000
end
# config wanopt storage
edit Internal
get
name : Internal
size : 512
webcache-storage-percentage: 0
webcache-storage-size: 0
wan-optimization-cache-storage-size: 512
In this case, the configured disk quota is 15 000MB.
However, the total HD logging space is 11 250MB. This is because FortiGate is using by design only 75 % percent of the disk.
75% of 15 000MB = 11 250MB (Total HD logging space: 11 250MB)
The rest of disk space is ready to be used either in more disk quota or in wanopt storage, in this case up to 14 540MB.
# config wanopt storage
edit Internal
set size
<integer> maximum total size of files within the storage range from 512 to 14540(MB)
Disk quota 15 000MB + Max WanOpt Storage 14 540MB = Total HD Usage space 29 540MB.
A maximum disk log quota of 29 028MB can be configured which will leave only 512MB for WanOpt (29 028 + 512 = 29 540).
# config system resource-limits
(resource-limits) # set log-disk-quota
<integer> disk quota within range 11008-29028 MB
