The System Setting > Advanced > Meta Fields menu enables you and other administrators to add extra information when configuring, adding, or maintaining FortiGate units or adding new administrators. You can make the fields mandatory or optional, and set the side of the field.
With the fields set as mandatory, administrators must supply additional information when they create a new FortiGate object, such as an administrator account or firewall policy. Fields for this new information are added to the FortiGate unit dialog boxes in the locations where you create these objects. You can also provide fields for optional additional information.
The one exception to this is the Administrators system object. This object applies only to administrators on the FortiManager unit. All other objects are related to FortiGate units.
Go to System Settings > Advanced > Meta Fields to add metadata fields for system-wide or FortiGate objects. The list of metadata fields opens.
Meta fields

The following information is available:
Meta Fields The name of this metadata field. Select the name to edit this field.
Length The maximum length of this metadata field.
Importance Indicates whether this field is required or optional.
Status Indicates whether this field is enabled or disabled.
The following options are available in the toolbar:
Delete Select to delete this metadata field. The default meta fields cannot be deleted.
Create New Create a new metadata field for this object.
Right-clicking on a meta field entry in the tree menu opens a menu with the following options:
Delete Select to delete this metadata field. The default meta fields cannot be deleted.
Edit Select to edit an existing metadata field for this object.
To add a new metadata field:
1. Go to System Settings > Advanced > Meta Fields. The list of configured meta data objects appears; see “System Settings” on page 146.
2. Select Create New. The Add Meta-field dialog box opens.
Add a meta field

Configure the following settings:
Object The object to which this metadata field applies. Select one of the following: System
Administrators, Devices, Device Groups, Administrative Domain, Firewall Addresses, Firewall Address Groups, Firewall Services, Firewall Service Groups, and Firewall Policy.
Name Type the label to use for the field.
Length Select the maximum number of characters allowed for the field from the drop-down list (20, 50, or 255).
Importance Select Required to make the field compulsory, otherwise select Optional.
Status Select Disabled to disable this field. This field is only available for non-firewall objects. The default setting is Enabled.
3. Select OK to save the new field.
To edit a metadata field:
1. Go to System Settings > Advanced > Meta Fields.
2. Select the name of the meta field that you would like to edit to open the Edit Meta-field dialog box. Only the length, importance, and status of the meta field can be edited.
3. Edit the settings as required, and then select OK to apply the changes.
To delete metadata fields:
1. Go to System Settings > Advanced > Meta Fields.
2. Select meta fields that you would like to delete. The default meta fields cannot be deleted.
3. Select the Delete icon in the toolbar, then select OK in the confirmation box to delete the fields. Device log settings
The FortiManager allows you to log system events to disk.
The device log settings menu window allows you to configure event logging to disk, and allows you to configure the following options:
Log rotation settings Log uploading