timed.enable -
If on and a remote protocol ("ntp" or "rdate") is specified the time daemon (timed) synchronizes to an
external source. If off, time is synchronized to the internal Real-Time Clock chip, just as it would with
the protocol set to "rtc." Valid values for this option are on or off. The default value for this option is
on.
timed.log
Specifies whether time changes initiated by timed should be logged to the console.
timed.max_skew
Specifies the maximum amount of skew between the time reported by the time server and the filer’s
time that we will allow when synchronizing the time. If the difference in the time reported by the server
and the filer’s time is greater than this value, the filer will not synchronize to the time reported by the
time server. The maximum skew is specified in seconds (suffix s), minutes (suffix m), or hours (suffix
h). Defaults to "30m".
timed.proto
Specifies the protocol used to synchronize time. Valid values for this option are rdate, sntp or rtc.
rdate specifies the rdate (RFC 868) protocol. sntp specifies the Simple Network Time Protocol (RFC
2030). rtc specifies the internal Real-Time Clock chip. The default value for this option is rtc.
Note that ntp is the displayed value for the sntp setting, and can also be used as a valid alias for sntp in
this option.
timed.sched
Specifies the timed synchronization schedule. There are several pre-defined schedules:
hourly
synchronize every hour (the default)
multihourly
synchronize every 6 hours
daily
synchronize every day at midnight.
Custom schedules may also be specified by giving the number of minutes or hours between time
synchronization. Minutes are specified by digits followed by an "m"; hours are specified by digits
followed by an "h". For example, options timed.sched 2h will cause time to be synchronized every two
hours.
To avoid overburdening the time server, the filer randomly selects the exact time of the synchronization
within a window specified by timed.window.
After timed.sched is set, timed.window is capped at ten percent of timed.sched.
timed.servers
Specifies up to five time servers used by the time daemon. Time servers are contacted in the order
specified; if a server can’t be contacted, the time daemon tries the next one in the list. The default value
for this option is the null string.
timed.window
Specifies a window around the synchronization time set by timed.sched. The actual synchronization
time is randomly chosen from within this window. timed.window is specified in seconds (suffix s) or
minutes (suffix m). The value may be 0, but it may not exceed ten percent of timed.sched.
timed.window defaults to "0s".
It is recommended that the following list of options have the same value on both filers in a cluster:
timed.enable
timed.log
timed.max_skew
timed.proto
timed.sched
timed.servers
timed.window
