Fabric OS Administrator’s Guide 27
53-1001763-02
Date and time settings 2

Setting the time zone

The following procedure describes how to set the time zone for a switch. You must perform the
procedure on all switches for which the time zone must be set. However, you only need to set the
time zone once on each switch because the value is written to nonvolatile memory.
1. Connect to the switch and log in using an account assigned to the admin role and with the
chassis-role permission.
2. Enter the tsTimeZone command.
•Use tsTimeZone with no parameters to display the current time zone setting.
•Use --interactive to list all of the time zones supported by the firmware.
•Use timeZone_fmt to set the time zone by Country/City or by time zone ID, such as PST.
Example of displaying and changing the time zone to US/Central
switch:admin> tstimezone
Time Zone : US/Pacific
switch:admin> tstimezone US/Central
switch:admin> tstimezone
Time Zone : US/Central

Setting the time zone interactively

The following procedure describes how to set the current time zone to Pacific Standard Time using
interactive mode.
1. Connect to the switch and log in using an account assigned to the admin role and with the
chassis-role permission.
2. Enter the tsTimeZone --interactive command.
You are prompted to select a general location.
Please identify a location so that time zone rules can be set correctly.
3. Enter the appropriate number or press Ctrl-D to quit.
4. At the prompt, select a country location.
5. At the prompt, enter the appropriate number to specify the time zone region or Ctrl-D to quit.

Network time protocol

You can synchronize the local time of the principal or primary fabric configuration server (FCS)
switch to a maximum of eight external network time protocol (NTP) servers. To keep the time in your
SAN current, it is recommended that the principal or primary-FCS switch has its time synchronized
with at least one external NTP server. The other switches in the fabric will automatically take their
time from the principal or primary-FCS switch, as described in “Synchronizing the local time with an
external source”.
All switches in the fabric maintain the current clock server value in nonvolatile memory. By default,
this value is the local clock server <LOCL> of the principal or primary FCS switch. Changes to the
clock server value on the principal or primary FCS switch are propagated to all switches in the
fabric.