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The Wikimedia Foundation are testing its secondary data center. This will make sure that Wikipedia and the other Wikimedia wikis can stay online even after a disaster.
They switched all traffic to the secondary data center 12 September 2018. On Wednesday, 10 October 2018, they will switch back to the primary data center.
Unfortunately, because of some limitations in MediaWiki, all editing must stop while we switch.
You will be able to read, but not edit, all wikis for a short period of time.
You will not be able to edit for up to an hour on Wednesday, 10 October. The test will start a bit after 14:00 UTC (15:00 BST, 16:00 CEST, 10:00 EDT, 07:00 PDT, 23:00 JST). If you try to edit or save during these times, you will see an error message.
This project may be postponed if necessary. You can read the schedule at wikitech.wikimedia.org. Any changes will be announced in the schedule. Please share this information with your community. /User:Johan(WMF) (talk)