Enabling and Disabling Writes to a Storage Node

When you create a storage node, the node is by default in read/write mode.

You can enable or disable writes to a storage node whenever needed, such as when you are about to replace a storage node and you want to stop new data blocks from being written to the node. While writes are disabled on a node, any new data blocks to be written are directed to other storage nodes that are write-enabled. Also, the node goes into read-delete mode, in which access to data is read only or delete.

To enable or disable writes to a storage node:

1. In the global administration view, select Main > Storage Nodes in the navigation pane.
   The Storage Nodes page is displayed.
   
2. Click the storage node name.
   The storage node page is displayed.
   
3. Select the Status tab.
   
   Note

   For storage which has a limited amount of storage, like the Local Filesystem storage node, the default storage node when setting up the CTERA Portal, Usage displays the amount of storage available, followed by the amount of used storage.
   
   For cloud storage and S3 storage, which is limited only by the supplier and is infinite from the perspective of the portal, no usage is displayed.

4. Slide Writes to on to enable writing to the storage node or off to disable writes.