If a personal home server is hacked. Are other PC's vulnerable?

view full story

http://forums.anandtech.com – I want to experiment with a personal home server, primarily just for learning purposes. Maybe will set up a ftp server, web page (just for me personally), maybe run some NVR software to record from my IP cameras, etc. Hoping to use some older hardware, maybe even a laptop, and run either some windows server software, or maybe a linux server distribution. My biggest concern though is this PC will be on my regular wireless network that all my PC's and devices are on. If my little server PC project were to be hacked into or compromised somehow. Is there any risk of my other pc's connecte (Hardware)