System Settings : RAID management : Adding new disks
 
Adding new disks
Some FortiManager units have space to add more hard disks to increase your storage capacity.
 
Fortinet recommends that you use the same disks as those supplied by Fortinet. Disks of other brands will not be supported by Fortinet. For information on purchasing extra hard disks, contact your Fortinet reseller.
To add more hard disks:
1. Obtain the same disks as those supplied by Fortinet.
2. Back up the log data on the FortiManager unit.
You can also migrate the data to another FortiManager unit if you have one. Data migration reduces system down time and risk of data loss. For information on data backup, see “Backing up the system”.
3. Install the disks on the FortiManager unit. If your unit supports hot swapping, you can do so while the unit is running.
4. Configure the RAID level.
If you have backed up the log data, restore the data. For more information, see “Restoring the configuration”.