Merge pull request #377 from NOAA-RDHPCS/#374-1

edits from Aparna

source/data/globus_online_data_transfer.rst

@@ -272,6 +272,29 @@ accounts on the RDHPCS system. You can share data files with external
 collaborators, both inbound and outbound, using the Untrusted DTNs (UDTNs). The
 process is described in this section.
 
+**For data that is expected to be permanent** (e.g., >3 months), use the GFDL
+institutional data portal end-point (noaagfdl#data_portal). This is for
+outbound sharing of data only. The data group will provide a Globus url to
+the data hosted upon completion of the data hosting.
+
+Data hosted on the GFDL Data portal servers is accessible through Globus, and
+available on request through the `data hosting request form
+<https://docs.google.com/forms/d/e/1FAIpQLScH-2mMLHesN6DJlxLEVU6Kg8wXEKvEr-JgB_5nXchjCDrYww/viewform>`__
+for papers, collaborations, and other projects. The requester will be notified
+of the Globus URL when the request is completed. GFDL Data Transfer features
+can be reviewed in `this table.
+<https://docs.google.com/spreadsheets/d/1fVC60ztNzYxFui1zyF_S_AMfoc3O15oa1-oOKhGrqQI/edit?gid=0#gid=0>`_
+
+For assistance, contact the GFDL team at [email protected].
+
+**For data that is short-lived, and not broadly shared with external users**,
+use RDHPCS end-points.
+
+.. note::
+
+  Refer to the `GFDL FAIR use and GFDL Data DOI policy
+  <https://www.gfdl.noaa.gov/fair-use-policy/>`_ for external data sharing.
+
 .. Note::
 
   * This data sharing feature is only available only on *untrusted*

source/data/transferring_data.rst

@@ -374,7 +374,25 @@ Host names for the CAC Bastion Server in Princeton, NJ:
    bastion-gaea.princeton.rdhpcs.noaa.gov
 
 Before You Begin
-^^^^^^^^^^^^^^^^
+^^^^^^^^^^^^^^^^^
+
+Only the first session to a bastion can establish an ssh tunnel.
+You will know that you already have an
+existing session when you see messages like
+
+  .. code-block:: shell
+
+    -------------------
+    bind [127.0.0.1]:57037: Address already in use
+    channel_setup_fwd_listener_tcpip: cannot listen to port: 57037
+    Could not request local forwarding.
+    -------------------
+
+To establish a new tunnel, do one of the following:
+
+
+  * Close any existing sessions
+  * Open a new session using a bastion where you have no existing sessions.
 
 In the steps below, replace First.Last with your own HPC username, and
 XXXXX with the unique Local Port Number assigned to you when you log