D-Link DFL-1660 User Manual page 194

5.3.1. DHCP Advanced Settings
Chapter 5. DHCP Services
Auto Save Policy
What policy should be used to save the lease database to the disk, possible settings are Disabled,
ReconfShut or ReconfShutTimer.
Default: ReconfShut
Lease Store Interval
How often, in seconds, the leases database should be saved to disk if DHCPServer_SaveLeasePolicy
is set to ReconfShutTimer.
Default: 86400
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