On Monday, April 18th starting at 10am, we will be replacing several hard drives in the DreamCompute US-East 1 cluster. You may see degraded performance on your instances during the maintenance window. We expect the actual maintenance to be quick, but are allowing additional time for stabilization and monitoring.
For more information, be sure to follow the updates on the DreamHost Status blog or join us on IRC. The team will be in #DreamCompute on free node.
This maintenance only affects the US-East 1 cluster.
UPDATE: We completed the maintenance without issue.