On Monday, May 16th starting at 10am, we will perform scheduled maintenance on Ceph, the underlying storage system, in the DreamCompute US-East 1 cluster. You may see degraded performance on your instances during the maintenance window.
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.