Isolation keeps agents safe. But many workloads need a shared source of truth: a dataset, a model checkpoint, a cache of downloaded files. Volumes give you both.

What is a Volume?

A Volume is a persistent, network-attached filesystem that you can mount into any number of sandboxes. Each sandbox still has its own private filesystem, processes and network, and only sees the Volumes you explicitly attach.

Common patterns

• Shared datasets: mount a read-only Volume with training or evaluation data into hundreds of parallel workers.

• Model caches: download weights once and reuse them across every GPU worker.

• Hand-offs: one agent writes results, another picks them up for review.

Permissions and safety

Volumes can be mounted read-only or read-write, per sandbox. Access is logged, and you can revoke a mount at any time without restarting the sandbox.

Performance

Volumes are cached locally on each host, so repeated reads are as fast as local disk. Writes are durable across availability zones within a region.

Volumes are available on Pro and Enterprise plans. Create your first one from the dashboard or with a single SDK call.