Performance problems during storage maintenance

Today we are moving some of the storage servers within our data center to balance power consumption, performance, and failure zones. We are also adding new routers and remove the (now unused) old servers. 

Although all of this was not expected to have user-visible impact, the migration did not go as smooth as planned. The main reason is that hardware defects hit us in a critical phase.

As a result, some VMs suffer currently from reduced storage performance. This also affects our mail server.

We are working hard to restore our storage cluster to its full I/O capacity by the end of the day. Spare parts have already arrived at the data center and we are putting them in service now.

Finally, once all this is over we'll give a more comprehensive review of the events and make a plan on how to communicate ongoing low-level maintenance tasks we perform better. We apologize for any inconvenience.