Thanks guys, what a great community...

We will do what Phis and Nihil suggested, We like try to do that back up every day ( yes is important school data administration files ).

We just had a good news from school donator, They will give us some money ( not alot tho...it's donations..) to buy second hand server.

OK, now we have two choices of the hardware that the one we looking for...is not very expensive and not to cheap.

Server Number 1 :
Code:
IBM X-Series 360 server, with four Xeon MP Processors 

- 4 x Intel Xeon Processor MP 1.4Ghz
- 4gb DDR Registered SDRAM DIMM memory
- 2 x 72gb 10k Ultra160 Hard drives
- Serveraid 4LX Ultra 160 SCSI RAID controller
- 1.44 Floppy drive and CDRom
- Integrated Light Path Diagnostics
- Integrated Ultra160 SCSI controller
- 1x 10BASE-T/100BASE-TX Intel Ethernet controller
- PS/2 Mouse & Keyboard ports
- VGA Port 8 MB SDRAM
- 2x 100 MHz/64-bit PCI-X
- 4x 66 MHz/64-bit PCI-X
- Six hot-swap fans
- 3x 370 Watt Hotswap power supplies
Server Number 2 :
Code:
Supermicro 5015M-MTB 1U Rack Server

Intel Pentium Dual Core 3.0Ghz
1GB DDR2 533 Memory
2x 160GB Seagate SATA Disks (RAID 0/1)
2x Spare Hard Drive Bays
Dual Gigabit LAN
3 Year Forward Replacement Warranty
Complete Specs http://www.supermicro.com/products/s...S-5015M-MT.cfm


OK...any advise which one better to buy? Number 1 or 2? we will buy it in 2/3 days after we've got decision.

Thank again for your help...