Desription
This article describes the new swap size dependencies on the RAM and storage disk sizes.
Scope
FortiAnalyzer after versions 6.4.8 and 7.0.3.
Solution
The new logic is as follows:
| [Sizes in Gigabytes] |
RAM <= 8 |
8 < RAM <= 16 |
16 < RAM < 64
|
RAM >= 64
|
| Storage < 100 |
Swap = 2 |
Swap = 2 |
Swap = 2 |
Swap = 2
|
| Storage >= 100 |
Swap = RAM x3 |
Swap = RAM x2 |
Swap = RAM |
Swap = 64
|
Note.
The swap size cannot exceed 4% of the storage disk size and is always a multiple of 2 (i.e. 4, 6, 8, 10, etc...).
Examples:
- Unit with 8 GB RAM and 99 GB disk would have 2 GB swap, because 4% of 99 is 3.96 which is not a multiple of 2.
- Unit with 8 GB RAM and 100 GB disk would have 4 GB swap, limited by the 4% max disk use.
- Unit with 8 GB RAM and 1000 GB disk would have 24 GB swap, because RAM x3 and none of the limits is reached.
Related article explaining the same logic for the previous FortiAnalyzer versions:
https://community.fortinet.com/t5/FortiAnalyzer/Technical-Tip-FortiAnalyzer-swap-size-dependency-on-...
