What impact does a timezone change have?
Applies to
- ONTAP 9
- NTP
Answer
- ONTAP does not automatically adjust scheduled jobs relying on the cron scheduler and must be adjusted manually
- Kerberos authentication occurs in UTC time and is timezone agnostic
- Regardless of configured time zone, Kerberos authentication will be impacted if time (adjusted for UTC) is more than 5 minutes off
- Changing time zone should not impact Kerberos, although it is always recommended to confirm clock is accurate compared to the UTC time
- If the time zone is currently set to UTC then changing time zones may affect the clock displayed time by however many hours the new time zone is from UTC
- If the time zone is not currently set to UTC then there will be no change
- Example: Adjusting from UTC to CET will cause the clock to advance 1 hour in winter or 2 hours in summer, but going from EST to CST will not cause the clock to change
Additional Information
- It is important to update time zone information as this can be done without an ONTAP upgrade
- At times countries update time zone rules or for Daylight Savings Time and this needs adjusted
- Example: Mexico not Observing DST in 2023
- How to adjust time zones in ONTAP 9