dbstore1004 is the analytics host that holds s2, s3 and s4.
It is now using 85% of its disk usage, mainly cause s4 (which is compressed already).
There's not much else we can do there apart from replacing this host.
My understanding is that Analytics didn't budget for having these hosts (dbstore*) expanded, so this requires some reorganization of our databases to find a host to replace this one with.
We can do the data transfer and db reorganization, but Analytics would need to do all the other side of things.