After a long, long quest to get the last of the users off the machine (over a year after it had been officially replaced by a new system a few 'old timers' were signing on to it to do historical lookups), I used the excuse of a power shutdown at City Hall to quietly pull the plug and not put it back. Wednesday my crew hauled it's carcass over to our building. This afternoon I went after it with a power screwdriver and pulled all twelve drives out of it. Ten of them went straight into the crusher. Two I set aside for one of my underlings who asked for his own opportunity to crush a couple of disks.
The fact that this is in-line with good data security practices is just window-dressing for the real reason for this escapade: finality. There will be no coming back for this '400. It is done. And now, this expensive to maintain, space- and power-hogging dinosaur can go quietly to the recycling pile. Where, at last, someone might wrest some goodness from its corpse.