Joachim Schipper wrote:
Try mine: refurbished Dell Optiplex GX1, 400 MHz Pentium II, 128 MB memory, and two matching pairs of harddisks (6.1 and 4 GB) with a combination of RAIDframe, altroot, and regular backups guaranteeing data consistency. Runs mail, DNS, web, and a couple of other services, and has space to spare - and if it ever needs more, I'll hook up the ~120 GB of external SCSI drives lying around.
Another option if you want cheap reliability is old server hardware. For example, there's a few Proliant 1850s (2x550MHz) on eBay for $70 with RAID and disks and 392mb RAM. Of course, by the time you ship it, you could have purchased three GX1s, and still sleep in the same room (fan noise).