# Snapshots of your workspace

A snapshot is what is installed on your workspace, saved as a numbered version. Every machine you attach starts from one, so you set things up once and never again.

## What a snapshot holds

The programs you installed on the workspace, the applications from the catalog, and your settings. Not the shared folder: that is one folder every machine already sees, so models and datasets never need to be in a snapshot.

A machine gets its own copy of the snapshot on its own disk, so it behaves like a computer you set up by hand.

## Saving one

Press Save on the workspace screen, run `hinode env promote` on your computer, or ask your assistant. The workspace stops writing to disk for a second or two, then you keep working while the copy finishes in the background. New machines use the version once it is complete.

Give it a line saying what changed — "torch 2.5 and the new LoRA nodes". You can add or change that line later, from the workspace screen or with `hinode env describe`. The workspace screen and `hinode apps` both show what you installed after the last save, so nothing is left out by accident.

## Which one a machine gets

A new machine starts from the newest complete version. The attach dialog shows which one that is, and lets you pick an older one instead — the way to check whether something broke with the last change.

A machine that is already running is never changed underneath you. It keeps the version it started with, and the machine card says when a newer one exists. To move a machine to the newer version, attach a fresh one.

Anything you install on a machine stays on that machine and goes when it is deleted. If it is worth keeping, install it on the workspace and save again.

## How many are kept

The five newest versions are kept. Saving a sixth removes the oldest, along with its note. Version numbers keep counting and are never reused, so a number always means the same snapshot.

Snapshots are not billed on their own line. What you pay for is the workspace's disk and each machine's, at $0.15 per GB a month for what is written on them.