The current AQS cluster would need three more hosts to increase the Cassandra storage availability for the next months. Ideally we'd need three new hosts as close as possible to the current ones (HP ProLiant DL360).
Current AQS cluster: aqs100.eqiad.wmnet
New nodes: aqs100.eqiad.wmnet
Rack requirements: a different rack for each host
Time requirements: we are planning to expand the cluster this quarter so we'd be ready to start working on the cluster expansion as soon as possible.
Let me know if I missed to add any relevant data.