You can stack up the cpu-boxes and connect to just one monitor and use the switch box to select the host. This saves space and you eliminate monitor, keyboard and the mouse (saving anywhere from 100 to 500 US dollars per set) and also avoid lot of clutter.
Using this switch box, you can stack up many PostgreSQL servers (development, test, production), Web servers, ftp servers, Intranet servers, Mail servers, News servers in a tower shelf. The switch box can be used for controlling Windows 95/NT or OS/2 boxes as well.
Please check out these sites:
Search engine yahoo to find more companies with "Server Switches" or "KVM Switches".
It is strongly recommended to have a dedicated unix box for each PostgreSQL data-server for better performance. No other application program/processes should run on this box. See the Business section of your local newspapers for local vendors selling only intel box, 13" monochrome monitor (very low cost monitor). Local vendors sell just the hardware without any Microsoft Windows/DOS (saves you about $ 150). You do not need a color monitor for the database server, as you can do remote administration from color PC workstation. Get RedHat (or some other distribution of) Linux cdrom from below -
Using this idea you can control many cpu boxes by just one monitor and one keyboard!
Below is the extract from networktechnic Inc for the "Server Switches"
Order now call 800-742-8324 (toll free in USA)
To receive our catalog please Email your address to: sales@networktechinc.com
CONTROL MULTIPLE PC'S with one keyboard monitor & mouse These electronic switches will allow one keyboard, monitor & mouse to control up to 64 PC's. Embedded microcomputers simulate the presence of keyboard, monitor & mouse to all attached PC's 100% of the time.
Features and Applications
Specifications - Keyboard
Controls - Buttons on Front
Mouse
* 9 pin D serial
* 6 pin miniDIN
Wired remote
Monitor-VGA