We faced some issues in our core network switches today, related to a firmware upgrade. Our engineers are working through it, and as a matter of pre-caution, we have taken some of the Zoho services offline. We estimate it will take approximately 2 hours for them to come back online. We want to emphasize that the data is safe, and this is purely a network layer issue.

The firmware upgrade was supposed to be a routine no-downtime event, but unfortunately it didn't go well. We apologize for the inconvenience.

Update: All services are now back online. What happened was a switch firmware upgrade created network trouble, which caused master/slave data replication to lag. To protect data integrity, we took the services offline, ran checks to ensure data integrity. So though the network itself became operational quickly, we had to run checks which took time. We again apologize for the inconvenience. We are instituting better procedures to avoid this kind of downtime in future.