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 8GB RAM 4x 1TB HDD 4x 3.5" 712318-421
$269.99
1U BareMetal pfsense opnsense Router Firewall DNS Server 6x 10GB Ethernet Ports
$149.00
1U Supermicro Server 10 Bay 2x Intel Xeon 3.3Ghz 8C 128GB RAM 480GB SSD 2x 10GBE
$273.00
Supermicro 1U Server X9DRW-3LN4F+ 2x E5-2680 2.7ghz / 128gb / 8xTrays / 2x 700w
$229.99
Supermicro Server 505-2 Intel 2.4GHz 16GB SYS-5018A-FTN4 - pfSense Compatible
$220.48
HP ProLiant MicroServer Gen8 | Intel XEON E3-1220L V2 | 8GB RAM | NO HDD | 4 BAY
$249.99
HPE ProLiant MicroServer Gen10 AMD Opteron X3216 8GB RAM No HDDs
$325.00
SuperMicro Mini Server SYS-E300-8D Xeon D-1518 @2.20GHz | 128 GB RAM | 500GB SSD
$479.99
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