I just bought a used IBM blade server chassis from a reseller in Ottawa.
Total cost shipped to me including border clearances is $2000-
The blade center has eleven blades (HS20) of this config: 2x 2.4 Gz dual-core Xeon CPUs, 2 Gb ram, 2x 250 Gb drives, 2x USB 2.0 plugs. That's the config for *each* each blade.
And a 12th blade (HS40) with 4x 3.2 Gz dual-core (8 cores total) Xeon CPUs, 4 Gb ram, 2x 500 Gb drives. This blade has 3x external USB hookups.
The chassis has an internal GigE router with 4x external interfaces and a pair of interfaces to each blade. There are three 2000 watt (dc) redundant/hot swap power supplies, a fully loaded blade center can run on 2 of the 3 PSUs. There is also a telco 48vdc option but seeing as how I don't have 48vdc in my house.......
The drives are estimated to have less than a years runtime on them.
There is a third-party storage blade available for this rig that will hold either 6 3.5" or 12 2.5" (laptop) PATA drives connected through a pair of LSI hardware raid controllers that in turn can feed the blade center internal router with iSCSI. The HS20/40 blades can do PTE remote boots so there is potential to replace all of the old disk drives with one big storage pile.
If I want to get back into messing with AIX there are PPC and Power4/5/6 blades available too. Spendy though.
Might be time to convert the other computers in the house to thin or zero client setups and run everything 'virtual' from The Beast.
Next investment should probably be a used LTO-3 drive and a pile of tapes.
I do suppose that I'm going to have to rig up a way to capture the exhaust heat in the winter and send it directly outside in the summer.....