How to raise a server in a small organization?

Question

Active Directory

Good afternoon.
There is a task to organize the relocation of the office for 70 people.
At the moment, the network is peer-to-peer, the OS is all sorts of different, but most are still Win 10.
The Internet comes and is distributed by Mikrotik. Most users get the network via Wi-Fi.
Most users deal with graphics and video, the volumes are large.
What should not be forgotten in building a competent network?
Is 1 server enough? Which hypervisor is best?
Where to begin? How can users connect from outside?
In the direction of which piece of iron to look? Can you recommend HelpDesk?
I haven't encountered such a global challenge yet.
I understand that there are a lot of questions for 1 topic, but even if I get an answer to only 1, this will already make my task easier.

Answer 1

Smart people say: "If it is possible to lay a wire - pull the wire, do not rely on WiFi." WiFi in a working network, and even where "Most users deal with graphics and video, the volumes are large" is a source of constant headache.
One server is never enough. Because there will be problems with its maintenance - it will be necessary to slow down the production process, or work after hours. And if the server fails, then all the work will fall apart.
And since you mention a hypervisor, it's even worse with hypervisors - you need at least three servers in a cluster to ensure fault tolerance. If this is Windows, then Micrisift Storage Spaces Direct will also be required to organize a distributed fault-tolerant storage. Or other technologies like DataCore, vSAN, ScaleIO, Ceph -- any distributed software storage systems.
About the choice of pieces of iron - will depend on the budget. Branded iron is more expensive, but there is less crap in operation, and there is sane support. Non-branded is cheaper, but more likely to fail, and support is simpler. Of the sane brands outside the Big Four, I can recommend STSS. They assemble servers on the SuperMicro platform, and are quite sane in terms of communication. There is support, but for showdowns you will have to take the piece of iron to their office.
Which hypervisor to choose also depends on the budget. There is money - choose VMware or Hyper-V with strapping (vCenter or SC VMM). No money - install KVM, ProxMox CE or Nutanix CE.
HelpDesk systems -- thousands of them. iTop, vsDesk, GPLI, OTRS, YouTrack (it's not really for this, but it's easy to sharpen).
And you need to start with basic things - with organizing a network, power supply at workplaces, allocating space for a server room. High-quality installation and planning of the network, careful selection and testing of equipment - subsequently eliminates many problems during operation.

Answer 2

How to raise a server in a small organization?

First of all, you need to find out why you need a server at all , what tasks it should solve.
Here's how to find out, so immediately most of the questions will disappear.
Then you need to find out the requirements for each task, and then you can already advise something and discuss it in detail.

Answer 3

I will never get tired of showing this - https://www.youtube.com/watch?v=IPogLMRBZ4o
Your "simple" question pulls dozens of other already rather complex questions.
File storage - for what?
1s - what and for what?
This is not hard to answer:
About the extension. Lay the maximum number of cables in the cabinets. The words that a maximum of 3 people will sit here - do not believe it, they will put the maximum possible.

Answer 4

2 heads ... 16 cores ... 4-6 screws ... esxi or hyper-v ... one gigabit port and one 10 gigabit and microtic (or ubik) switch with support for 10 gigabit ports ... go .. and your network for 10 years is definitely equipped with everything