Gather around folks, I'll paint you a nice picture based on a true story, back from my sysadmin days. Listen up.
It's about HP and their Solaris 5.4/6 support.

- Yet another Prod Solaris dinosaur crashed
- Connected to console, found a dead system disk; for some reason it was not booting on the remaining redundant disk...
- Logged an HP vendor case. Sev1. SLA for response is 30 minutes, SLA for a fix is <24 hours
- It took them 2 days to respond to our Prod server outage due to failed system disks (responses "we are looking into this" do not count)
- it took another day for them to find an engineer who could attend the server in the DC
- The field engineer came to the DC 4 hours before the agreed time, so he had to wait (DC was 4-5 hours of driving away from HP centre)
- Turns out, he came to the wrong datacentre and was not let in even when the time came

- We had to reschedule for two days later. Prod is still down
- The engg came to the DC on time. He confirmed he had the FRU on him. Looks promising
- He entered the Hall
- He replaced the disk on the Solaris server
- It was the wrong disk he replaced. So now the server is beyond rebuild. It has to be built anew... but only after he comes back and replaces the actually faulty disk.
- He replaced that disk on the wrong Solaris server