I don't have a 'Hardware service manager' option...
That's IBM for you.
You'd often find things had 'moved' following a release upgrade. I seam to recall that the Hardware service manager option was new at one of the early releases, possible v3r1. You'll probably have to look through the other STRSST menu options looking for the list config option, or try the PRTSYSINF command (again, assuming it is available at your release).
The ASP 1 lists itself as 960 size 75.65% used. Each of the three units under it are listed as 320 size 75% used (+/- 0.3) each. Protected is listed as 0/0.00% for everything. Does this mean I have three 320mb drives arranged as a single 960mb partition ?
In a nutshell, yes. The Auxiliary storage pool (ASP) is similar to a partition covering one or more disk units. You always have ASP 1, and can configure other disks into ASP 2 through to 16. The 'big boys' would often have their data in one ASP and the journaling (before and after images of record changes) in another ASP. The 0/0.00% protected implies your disks are not raid protected.
How can I find out what is taking up all the room ? How big is the OS anyway ?
So you got about 726mb of OS, programs, data, etc, spread across your 3 disks. Again, there are mutiple ways of skinning this cat (some of it depends on what is available at your OS release). Try the following:
1. Enter this command to submit a job to retrieve the disk information:
SBMJOB CMD(RTVDSKINF)
This will take a while to run (possibly hours, but you can carry on tinkering while it does its thing) as it looks at all of the objects in all of the libraries and stores the results in file QEAZDISK in library QUSRSYS. You can check that the job is still running by using the Work Active Jobs WRKACTJOB command - you should see it running under subsystem QBATCH.
When it has finished, run the command PRTDSKINF. Prompt it with F4 and select what type of info you want. Then view the spool files produced.
If the RTVDSKINF/PRTDSKINF options aren't available at your release, then you'll have to go for the following more basic command:
DSPLIB LIB(*ALL) OUTPUT(*PRINT)
You'll then have to trawl through the spool file - the print option (as apposed to display option, 'OUTPUT(*)', shows the the total size of each library in bytes at the end of each library listing.
If you just want to save the operating system and ignore the user data, enter GO SAVE and select menu option 22 instead - that'll just save the system data only. Put your cursor over the menu text and hit F1 for help on what it'll do.
Also, if you do start off a system save and run out of tapes, the worst thing that'll happen is you have to cancel the backup, re-INZTAP those and some more tapes and then start again - been there, done that, got the T-shirt and a box full of spare initialised tapes
Also, how do I scroll a list where I have More.... at the bottom ?
If you've got a proper twinax terminal, look for keys marked roll up and roll down (can't remember if you have to hold down an alt key or something like when using the roll keys. Also confusing, at first, is that roll up actually moves the screen content up so that it appears as though you are paging down and roll down does the opposite
- you tend to forget these things after many years of using page up and down on terminal emulation software)
I've mentioned it a few times already, but one of the most invaluable things about this system is the cursor sensitive help. Just stick the cursor anywhere on any screen, whether it is a prompt, menu text, error message, whatever, and hit F1 for help. It certainly makes life easier when you are learning the system