The following configuration paramters are added in the file drive.properties:

# Defines the interval of a periodic background task that performs cleanup
# operations for cached checksums in the database. The task is executed only
# once per interval in the cluster, so this value should be equally defined
# on each node.
# The value can be defined using units of measurement: D (=days),
# W (=weeks) and H (=hours). Defaults to 1D (one day), with a minimum
# of 1H (one hour). A value of 0 disables the periodic background task.
com.openexchange.drive.checksum.cleaner.interval=1 D

# Defines the timespan after which an unused checksum should be removed from
# the database cache.
# The value can be defined using units of measurement: D (=days),
# W (=weeks) and H (=hours). Defaults to 4W (four weeks), with a minimum
# of 1D (one day).
com.openexchange.drive.checksum.cleaner.maxAge=4W