When I installed it (enough times to get a feel) it was this:

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Basic HP-UX11 install

* Picking a keyboard: Ours are of the types PS2_DIN_{UK,US}_English(_Euro)?. Dollar key means `US'; pound key means `UK'; Euro key means `add _Euro'.

* User interface options: Use the `Remote Installation' on the Ignite-UX server; before I had such a server, I picked `Advanced Installation'.

* `Basic' tab:

You seem to get 64-bit HP-UX 11 if the machine will support it and 32-bit if not. Fair enough; we'll go with that.

Swap: for 512M machine, I did 1024M swap; for 1G machine, I did 1536M swap.

Under `Additional...': For a machine with two+ small disks (< 4GB), I put all disks in root volume group; striped those disks in the root VG.

In all cases, I did `NO' for `save patched files'.

We also do 'Disable DHCP', because we don't use it.

* `Software' tab: nothing to do.

* `System' tab:

Hostname and IP address as you would expect.

Put in our standard DNS servers.

Put in our standard NTP server.

* `File system' tab:

See disk configuration page... In particular, do account for special disk-hogging system software (e.g. Ignite-UX) that might go on the box.

Under `Additional Tasks'->`Advanced FS Params', set `Largefiles' to YES for the /._disk1 partition.

* `Advanced' tab: nothing to do.

After all of that, press `Go!'

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That's about it. If the hardware is all standard HP hardware (why would it not be?) nothing should go wrong. I'd say it was roughly like installing Red Hat 5.