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					 Gateway
                                                                                                   wget                   Publisher
 -Indexes Catalogs
  for search
 -Federates with
                                               Gateway                                             script                  Client
  other Gateways
 -etc….                            RPC
                                                                          HTTPS                      HTTP       HTTPS
                                   Sending
            RPC                                             HTTPS         Product                    Response   Request
                                   Notifica                                            HTTPS                               HTTPS
            Subscribe for          tions                    Product       Response
                                                            Request                    Fetch                               Response
            Notifications
                                                                                       Catalog

                                   ESG Data Node                                                                                 Replication
Data Node SVC
-Encapsulates the
                                                                                                                                   Client
                            Data Node                    Live Access CDAT
 DN MGR
                                                                      NCL   THREDDS                       ESG
-Exposing RPC                Service                     Server      Ferret
 delegating calls                                                                                       Publisher                THREDDS
                                                              Tomcat Server                                                      -Creates and Servers
                                                                                                                                  up catalogs for
Data MGR                  Data                                                                                                    scanned datasets
-Logs Events (since
 nexus of
                          Node                                                                   Replication Agent
                                                                                                                                 - SSL for security
                                                   Postgres               PKI
subsystems)             Manager                                                                                                 Publisher
-Discover other                                    Database            Trustroots                                               -Scans data files writes
data                     (DNM)                                                                        BDM                        to database
 nodes                                                                                                                          -Makes RPC call to
                                                                                                                                 Gateway to come and
GridFTP Server
                             Monitor
                                                     GridFTP                                     GridFTP
-High
                              Metrics                                 OPeNDAP-G2                         Other                   get prepared catalog

performance                 Notification             Server                                      Server                         - SSL for security

data download                                                                                                                   Replication Agent
                      Hardware: Rotating                                                           Operating System:
                                                                                                                                -Makes calls on DN MGR
                       disk, deep storage                                                           Red Hat/Centos              Instance
OPeNDAP-G2
-Client analysis                           GSI/gridftp     Gridftp                                                              -Subscribes as listener for
tools integration                          Data            Data                                                                 events from DN MGR
-Hyrax                                     Request         Download                                                             -Uses BDM to move
                                                                                                                                selected bits of data

                                                                                                                                BDM
                                                                                                                                -Uses GridFTP to
                                                                      Analysis       CDAT
                                                                                                                                 efficiently push bits
                                                   DML                                NCL
                                                                                                                                -Able to use other
                                                                      Clients        Ferret                                      mechanisms

				
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