Merge pull request #107 from UCL-ARC/update-rdss

Update rdss connection info for Myriad and Kathleen

Author: heatherkellyucl

mkdocs-project-dir/docs/Supplementary/Connecting_to_RDSS.md

@@ -12,11 +12,11 @@ RDSS and the central UCL research computing platforms are presented below.
 Sections of the example code surrounded by angle brackets (\<\>) should 
 be replaced by the information indicated (do not keep the angle brackets in).
 
-## Between Myriad and RDSS
+## Between Myriad or Kathleen and RDSS
 
 If you already have an account with the Research Data Storage Service, you can
-transfer data directly between Legion and Research Data Storage using
-the Secure Copy (`scp`) command.
+transfer data directly between Myriad or Kathleen and Research Data Storage using
+the Secure Copy (`scp`) command, copy (`cp`) command or `rsync` command.
 
 ### From RDS to Myriad
 
@@ -35,15 +35,44 @@ running jobs) running the command:
 scp ssh.rd.ucl.ac.uk:~/data_file.tgz ~/Scratch/
 ```
 
-### From Myriad to RDSS
+### From Myriad or Kathleen to RDSS
 
-From Myriad, send data to your project space on RDSS by running the
-command:
+The RDSS is mounted on the Myriad and Kathleen login nodes at `/rdss`. There are 
+subdirectories `rd00`, `rd01` that contain projects with names beginning 
+`ritd-ag-project-rd00` or `ritd-ag-project-rd01` and so on. You can use `cp` or local
+`rsync` commands to copy data between your RDSS space and your Myriad space.
+
+Rsync is useful as rerunning it will not copy files that already exist in the 
+destination - so it can be used to synchronise data and to continue if a transfer was 
+interrupted partway through.
+
+```
+# Use rsync archive mode (recursively copy directories, copy symlinks without resolving,
+# and preserve permissions, ownership and modification times) to copy the data directory
+# and everything in it from RDSS to Scratch.
+# --safe-links ignores any symbolic links that point outside the copied tree and
+# any symlinks that are absolute paths
+rsync --safe-links -r -a /rdss/rd00/ritd-ag-project-rd001/ritd-ag-project-rd0001-test/data ~/Scratch
+```
+
+You can use the copy command. It has fewer options than rsync and is more suited for simpler
+and smaller copies.
+
+```
+# Copy the data directory from RDSS to Scratch recursively and preserve permissions.
+cp -rp /rdss/rd00/ritd-ag-project-rd001/ritd-ag-project-rd0001-test/data ~/Scratch
+```
+
+You can still use scp to do a remote copy to the RDSS ssh node and send data to your project 
+space on RDSS by running the command:
 
 ```
 scp data_file.tgz [email protected]:<path_to_project_space>
 ``` 
 
+Note that the old Myriad transfer node `transfer02` is no longer accessible now that the login nodes
+can be used instead.
+
 The RDSS support pages provide more
 information: