updates iridis notes (anyone using iridis?)

howTo/iridis.md

@@ -6,10 +6,10 @@ HPC = [High Performance Computer](https://www.southampton.ac.uk/isolutions/staff
 
 We have:
 
- * Iridis 4: https://hpc.soton.ac.uk/redmine/projects/iridis-4-support/wiki
+ * _Iridis 4: https://hpc.soton.ac.uk/redmine/projects/iridis-4-support/wiki (**retiring February 2022**)_
  * Iridis 5: https://hpc.soton.ac.uk/redmine/projects/iridis-5-support/wiki
 
-5 is newer, bigger & better etc etc but new projects start on 4 and, presumably when you prove you need 5, you can transfer.
+5 is newer, bigger & better etc etc but new projects start on 4 (_before February 2022_) and, presumably when you prove you need 5, you can transfer.
 
 ## How to access
 Fill in the form on the [iridis page](https://www.southampton.ac.uk/isolutions/staff/iridis.page).
@@ -18,30 +18,35 @@ Fill in the form on the [iridis page](https://www.southampton.ac.uk/isolutions/s
 
 OK, so you are going to need to [get a bit friendly with unix](https://www.dummies.com/computers/operating-systems/unix/) because the Iridis service runs unix (linux). In general you will be interacting with it using a command line tool like terminal/console etc. Back to the good old days. 
 
-You can, possibly, get iridis to [open an Xwindow on your PC](https://hpc.soton.ac.uk/redmine/projects/iridis-4-support/wiki/Connecting_to_Iridis_4#Using-GUI-programs-through-SSH-connection) but that requires fancy ssh tunneling and stuff.
+Assuming you want iridis 5 to start with you can login to any of:
 
-Assuming you want iridis 4 to start with you can login to any of:
-
- * iridis4_a.soton.ac.uk
- * iridis4_b.soton.ac.uk
- * iridis4_c.soton.ac.uk
+ * iridis5_a.soton.ac.uk
+ * iridis5_b.soton.ac.uk
+ * iridis5_c.soton.ac.uk
 
 To do this:
 
  * make sure you are running the UoS vpn
  * open a terminal/console window on your desktop
- * type `ssh YourUsername@iridis4_a.soton.ac.uk` (or which ever you want) & hit return. YourUsername = your UoS username obvs
+ * type `ssh YourUsername@iridis5_a.soton.ac.uk` (or which ever you want) & hit return. YourUsername = your UoS username obvs
  * type `yes` to the fingerprint question (DO NOT PANIC!). This should only happen the first time you do this
  * type your UoS password & hit return
  * you're in!
 
 ## Now what?
 
-R: https://hpc.soton.ac.uk/redmine/projects/iridis-4-support/wiki/R
+Read these first! 
+
+ * https://hpc.soton.ac.uk/redmine/projects/iridis-5-support/wiki/New_User_Warnings <- **especially this one!**
+ * https://hpc.soton.ac.uk/redmine/projects/iridis-5-support/wiki/Getting_started
+
+## R
+
+https://hpc.soton.ac.uk/redmine/projects/iridis-5-support/wiki/R
 
-After you've [loaded the R module](https://hpc.soton.ac.uk/redmine/projects/iridis-4-support/wiki/R), you can interactively run R scripts by running R. Or you can run them non-interactively using the `Rscript <yourScript.R>` command. But you probably shouldn't. 
+After you've [loaded the R module](https://hpc.soton.ac.uk/redmine/projects/iridis-5-support/wiki/R), you can interactively run R scripts by running R. Or you can run them non-interactively using the `Rscript <yourScript.R>` command. But you probably shouldn't. 
 
-Instead you should submit your commands (e.g. `Rscript myScript.R`) to the Iridis scheduling system so it can balance everyone's needs. You need to [learn how to do this](https://hpc.soton.ac.uk/redmine/projects/iridis-4-support/wiki/Job_submission)...
+Instead you should submit your commands (e.g. `Rscript myScript.R`) to the Iridis scheduling system so it can balance everyone's needs. You need to [learn how to do this](https://hpc.soton.ac.uk/redmine/projects/iridis-5-support/wiki/Job_Submission)...
 
 ## How to get your code on Iridis