Storage
DGX Cloud Lepton provides a storage solution that allows you to store and access your data in a secure and scalable way.
Storage Type
There are two types of storage available on DGX Cloud Lepton:
- Node Local Volume: Node Local Volume is designed to persist data across workload lifecycles on the same node. It stores data directly on the node where your workload runs.
- Node Local Volume data is not replicated across different nodes.
- You are responsible for managing and cleaning up the data.
- Static NFS Volume: Static NFS Volume enables workloads on multiple nodes to share a common filesystem. The data resides on a NFS server that any workload can mount and use.
- All nodes with connectivity to the NFS server can read and write this data.
- Performance is governed by network bandwidth, latency, and the capacity of the NFS server.
- Data durability relies on the backup and reliability features provided by the underlying NFS server.
Add Storage for Node Group
You can add those two types of storage for your node group.
Navigate to the storage page on the DGX Cloud Lepton dashboard, you can see the storage list grouped by node groups.
As you can see, each node group has its own Node Local Volume list and Static NFS Volume list. You can add storage for each node group separately by clicking on the button on the top right corner of the section.
For both types of storage, you can specify the volume name and the mount path when adding storage.
Before adding static NFS volume, please make sure NFS is already mounted on all nodes in the node group with the same mount path.
Permission management
You can manage the permission for volume by clicking on the Permission button in the volume row.
Path
In the Path field, you can specify the path prefix you want to grant access to. Then the permission will only apply to the path prefix you specified.
For example, if you specify /data/test as the path prefix, then the permission will only apply to the path /data/test and all subfolders under /data/test.
Policy
There are two kinds of permission policies:
- Permitting selected members to specific path: This will only grant access to the selected members for the path you specified in the Path field.
- Access to subfolders if email username matches: This will automatically grant member access to all subfolders whose name matches the user email username(the part before the @ symbol).
Members
If you select the Permitting selected members to specific path policy, you can select the workspace members you want to grant access to.
Use Storage for Workloads
After adding volumes, you can use them in your workloads.
For example, when you are creating a Dev Pod, you can specify the node group as the one you've added the storage to.
And then in the Storage section, click on the Mount storage button, you can select the volume you want to mount.
- Volume: You can select the specific volume you want to mount by the name, there will also be a indicator to show the volume type.
- From path: Specifies the directory path within the volume. For example, to mount the root of the volume, set the "From path" to
/. - Mount path: Specifies the the path where the directory will be mounted in the container. For example, to mount the volume's root directory to
/mntin the container, set the "Mount path" to/mnt.
You can mount multiple storages at the same time. After the pod is created, you can see the mounted storages in the details page.
