How to raise IT infrastructure correctly?

Question

Active Directory

Good afternoon Toasters. Recently I got a job in a private company as an administrator, now the management is tasked with making the IT infrastructure more serious than the current one.
Goals:
1) AD, DNS, VPN, Mail, File
2) Physical server - which model to choose, and why
The allocated amount is not large, somewhere in the amount of 50-70 thousand rubles.
PS: The license for Windows Server 2008 R2 is available
. I'm waiting for advice and suggestions. I want to be a competent administrator, and I advise you.
The result should be like this:
Each employee must be mobile, that is, sitting on any computer of organizations worked with their programs and documents. Mail server - it is desirable that it be free as an alternative for Linux in Windows, or raise a mailer in Hyper-V on Linux or whichever you advise. Another question about the file server, is it desirable to keep it on server hardware or on a regular PC (i5 - 4430, 4Gb, 1Tb (Raid1))

Answer 1

70,000 rubles now is not something that is not serious, it is such a schoolchild's home infrastructure.

Answer 2

There were already similar questions. First, tell me how many users and the specifics of the enterprise.
Server, for example, on Supermicro. More memory, any average processor. A separate piece of hardware for backups, at least an external usb screw, if there is no money at all.
What is a server license? If it's just for a server, then network and user licenses are also needed.
It is desirable to deploy everything on separate virtual machines.
The file server is load dependent. In general, more details.

Answer 3

1. With mail - if it's expensive for Chang (Exchange) to buy, link corporate mail to Google Yandex.
2. According to 1C, how many people work with it? How much does the base weigh? As soon as the base is more giga volume, there will be brakes. For 10 users, I had a separate system unit with Core2Quad and 16 GB of RAM. Install WinServer and Terminal. You put 1s-ku, folders with databases there, stick the key from 1s-ki and set up a daily backup. I had Cobian Backup installed.
3. On the 2nd system unit, be sure to raise the BDC (backup domain controller)

Answer 4

70 thousand is not enough even for bare iron. More precisely, it can, of course, be enough (for some kind of city ... like Supermicro), but you need to look at what is already there, maybe something will be able to be used. From the software in such conditions, apparently everything will have to be done on free Linux, and sell the server Windu and buy a second server. In general, it's easier to quit right away ;-)
I don’t see an option to go the way of using Windows, except that it will turn out to be a bunch of unlicensed software. And this is such a threat to business that it's better to quit right away ;-) Recently, in a related office supported by me, there was a visit to check the Licensing of the software, in short, the office almost went bankrupt. In short, in "my" office they decided to order me a software audit and partial licensing / replacement of software for free. Things like that... We got 150 thousand - replacement of computers with outdated OS, and the same amount for Soft...