Need advice on building a cloud?

Question

Iron

Hello dear community. Need advice.
There is equipment:
8 servers
2x Intel Xeon E5-2620V2 (2.1 GHz 6 cores) \ 128 OSI \ 300 SAS + 120 SSD
4 servers
2x Intel Xeon E5-2620V2 (2.1 GHz 6 cores) \ 128 OSI \ 8x 4000 SAS + 120 SSD
4 servers
2x Intel Xeon E5-2620V2 (2.1 GHz 6 cores) \ 32 OSI \ 32x 4000 SAS + 120 SSD
+ everything has:
40x 4000 SAS (all WD RE WD4001FYYG brooms)
2x 300 SAS
5x 120 SSD
34x HP 16 GB DDR3 1866 MHz (memory is all the same)
Actually, the question is, I want to build a cloud (their projects will be spinning + maybe I’ll allocate a little hosting to someone), tell me how best to reconfigure all this, what software to do, what can you offer?
Thanks in advance for any help…
Complementing ------------------------------------- ----------------------
I'm going to place in a data center (I'm looking at which one for now)
I'm going to use it for my own needs + organize a small hosting (and can you advise a control panel) to return the rent of cabinets (at first I just want to figure out what and how, but then it will be possible to hire an admin to look after everything).
Network hardware:
All servers have additional network ports (that is, two RJ45 ports in the motherboard and 2 on the network)
Cisco 2821-CCME
Cisco SG500X-48-K9-G5
+ there are also 16x APC Smart-UPS RM 3000VA 2U (I won’t need them, maybe who needs it, can I sell it?)
I want to do it in such a way that I don’t have to think about hosting for my projects + give people a good service, the main thing is to return the waste, I think it should work ...

Answer 1

Possible alternatives to Proxmox:
- opennodecloud.com
- en.wikipedia.org/wiki/OpenNebula (does not know how to OpenVZ)
- https://ru.wikipedia.org/wiki/OpenStack (actually the industry standard)
The main (IMHO) disadvantages of Proxmox are paid updates and batch garbage on each node.
It is recommended that before making a final choice, play around with each of the solutions on simple configurations - one server, server + NAS, two servers + NAS, two servers + two NAS.
It is advisable to plan a working solution several steps ahead and understand at each step why it is needed. If this is not the case, read the documentation, build a minimal stand, etc. until enlightenment. In haste here will not work.