Right now, despite being two separate pools, the ATS-BEs for both text and upload are configured identically, and in theory could handle traffic for each other.

The upsides of merging the pools:

• cache_upload could gain a lot of storage capacity for its large objects
• cache_text would gain more upstream connection-handling capacity for all its miss/pass traffic

The potential downsides are basically with something going horribly wrong: maybe they start to thrash on objects, or something unforeseen.