Document enabling backups for hubs running jupyterhub-home-nfs

docs/howto/features/storage-quota.md

@@ -33,6 +33,10 @@ terraform plan -var-file=projects/$CLUSTER_NAME.tfvars
 terraform apply -var-file=projects/$CLUSTER_NAME.tfvars
 ```
 
+```{important}
+At this point, it is also a good idea to enable [automatic backups of the the NFS server](howto:filesystem-backups:enable:aws) as well.
+```
+
 ## Enabling `jupyterhub-home-nfs`
 
 To be able to configure per-user storage quotas, we need to run an in-cluster NFS server using [`jupyterhub-home-nfs`](https://github.com/sunu/jupyterhub-home-nfs). This can be enabled by setting `jupyterhub-home-nfs.enabled = true` in the hub's values file (or the common values files if all hubs on this cluster will be using this).

docs/howto/filesystem-management/filesystem-backups/enable-backups.md

@@ -4,13 +4,33 @@
 This document covers how to enable automatic filesystem backups across the cloud
 providers we use.
 
-(howto:filesystem-backups:enable:gcp)=
-## GCP
-
 ```bash
 export CLUSTER_NAME=<cluster-name>
 ```
 
+(howto:filesystem-backups:enable:aws)=
+## AWS
+
+```{attention}
+For AWS hubs running `jupyterhub-home-nfs` only
+```
+
+To enable backups of home directories running on AWS EBS volumes, add the following line to the cluster's terraform values file.
+
+```
+enable_nfs_backup = true
+```
+
+Then apply the changes with:
+
+```bash
+terraform plan -var-file=projects/$CLUSTER_NAME.tfvars
+terraform apply -var-file=projects/$CLUSTER_NAME.tfvars
+```
+
+(howto:filesystem-backups:enable:gcp)=
+## GCP
+
 1. **Create relevant resources via terraform.**
 
    Our terraform configuration supports creating the relevant resources to support