Changing the FortiGate-7000F log disk and RAID configuration

The two FIM-7921Fs included in a FortiGate-7121F both contain two 4 TByte SSD log disks. By default the disks are in a RAID-1 configuration. In the RAID-1 configuration you can use the disks for disk logging only. You can log into the CLI of each FIM-7921F and use the execute disk command to view and change the configuration of the disks including the RAID level.

Changing the RAID configuration deletes all data from the disks and can disrupt disk logging so a best practice is set the RAID configuration when initially setting up the FortiGate-7121F.

From the CLI you can use the following command to show disk status:

execute disk list

Use the following command to disable RAID:

execute disk raid disable

RAID is disabled, the disks are separated and formatted.

Use the following command to change the RAID level to RAID-0:

execute disk raid rebuild-level 0

The disks are formatted for RAID-0.

Use the following command to rebuild the current RAID partition:

execute disk raid rebuild

The RAID is rebuilt at the current RAID level.

Use the following command to show RAID status. The following command output shows the disks configured for RAID-0.

execute disk raid status
RAID Level: Raid-0
RAID Status: OK
RAID Size: 8001GB

Disk 1: OK Used 3851GB
Disk 2: OK Used 3851GB