Costs
-------------------
1x 	Supermicro X8DTL-3F			€ 310,92
2x 	LSI SAS 9211-8i (SAS9211-8I/SGL)	€ 218,41
1x 	Intel Xeon L5506			€ 406,90
16x 	Seagate Barracuda Green 5900.3, 2TB	€ 107,90
4x 	Seagate Barracuda LP ST32000542AS, 2TB	€ 104,90		(have 3, purchase 1)
1x 	Cooler Master Silent Pro M1000		€ 132,45
3x 	Crucial m4 CT064M4SSD2 64GB		 € 90,90
1x 	Crucial m4 CT128M4SSD2 128GB		€ 167,49		(have 1, purchase 1)
2x 	Kingston ValueRAM KVR1333D3D4R9SK2/16G	€ 150,80
4x	Samsung Spinpoint F1 HD103UJ, 1TB	    			(have all)
Total: 					      € 3.769,28

Setup
-------------------
zpool data storage
	3x5 raidz1 + 1 coldspare with 16x Seagate Barracuda Green 5900.3, 2TB
zpool client data/VM
 	2x2 mirror with	Seagate Barracuda LP ST32000542AS, 2TB
	2x2 mirror with Samsung Spinpoint F1 HD103UJ, 1TB
	1x1x with Crucial m4 CT064M4SSD2 64GB read cache
	1x2x with Crucial m4 CT064M4SSD2 64GB mirror write cache
zpool client OS
	1x2x mirror with Crucial m4 CT128M4SSD2 128GB

Motivation:

data storage:
Long term data storage where space efficiency counts, should do around 300MB sequential read/write.

client data:
Primarily used for incoming data files, two dozen low activity virtual machines and Windows 7 client bigger storage. Performance should be OKish with 2 striped 2TB disks and 2 striped 1TB disks combined with a 64GB mirror SSD of write-cache and 64GB read cache SSD. This would probably bit hit the hardest of all volumes.

client OS:
Used for Windows client booting, is a mirror of disks.