Issues relating to HDD Installs. Once you have installed Knoppix, it basicly becomes debian, so you should check out www.debian.org for information.
HP ProLiant MicroServer Gen8 G8 G2020T 16GB RAM 2x 1TB HDD 4x 3.5" 712318-421
$299.99
1U Supermicro Server 10 Bay 2x Intel Xeon 3.3Ghz 8C 128GB RAM 480GB SSD 2x 10GBE
$273.00
HP ProLiant MicroServer Gen8 G8 G2020T 8GB RAM 4x 1TB HDD 4x 3.5" 712318-421
$279.99
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
HP ProLiant MicroServer Generation 8 Xeon 16Gb 4-BAY 16TB HDD (4 x 4TB) included
$490.00
Supermicro Server 505-2 Intel 2.4GHz 16GB SYS-5018A-FTN4 - pfSense Compatible
$220.48
SuperMicro CSE-836 16LFF Server X9SCL+-F Xeon E3-1220V2 3.10GHz CPU 8GB RAM
$169.99
HPE ProLiant MicroServer Gen10 Plus v2 Ultra Micro Tower Server - 1 x Intel Xeon
$846.48
1U 20" Short Depth Server Firewall PFSense X11SSH-F Xeon 3.5Ghz 32GB RAM NVME
$247.00
2U 12 Bay SAS3 SuperMicro Server 6028U-TR4T+ W/ X10DRU-i+ Barebone 12 Caddy RAIL
$299.00