add node disk sizing recommendation (coder#447)

ericpaulsen · Katie Horne · web-flow · commit bad493cf1734 · 2021-06-29T10:01:24.000-05:00
* add node disk sizing recommendation

* lint

* language

* Edit text

Co-authored-by: Katie Horne &lt;katie@coder.com&gt;
diff --git a/setup/requirements.md b/setup/requirements.md
@@ -67,6 +67,13 @@ specifically, the persistent volume claim (PVC) requires the block storage type
 (the PVC is created when you create the workspace to mount the requested block
 storage).
 
+Files stored in the `/home` directory of a workspace are persisted in the PVC.
+All files that live *outside* of the `/home` directory are written to the node's
+disk storage (the node's disk storage is shared across all workspaces on that
+node). If there's insufficient node disk storage, Coder cannot create new
+workspaces (and, in some cases, workspaces may be evicted from the node). To
+avoid this, we recommend creating nodes with a disk size of at least 100 GiB.
+
 Additionally, you must enable [dynamic volume
 provisioning](https://kubernetes.io/docs/concepts/storage/dynamic-provisioning/#enabling-dynamic-provisioning)
 so that Coder can mount the PVC to the workspace (if you're using a custom
