What hardware do you need for your DNS server?

Question

Domain Name System

I'm wondering if I put my dns on the vps-ku so that it is used instead of the provider's dns server, then what configuration is needed to handle about 2-3 thousand users. And how to calculate resources depending on the number of new users. Thank you.

Answer 1

The home toaster will pull. Caching DNS is demanding only for cache memory, otherwise it is unpretentious. For 5000+ online users I spend:
1623 bind 20 0 289m 124m 2260 R 4.1 6.1 198:28.35 named
1624 bind 20 0 289m 124m 2260 S 4.1 6.1 198:00.62 named
1626 bind 20 0 289m 124m 2260 S 1.5 6.1 66:52.76 named
And this is for a fat bind, there are less voracious solutions, it spins in general on a virtual machine.

Answer 2

I have one on a virtual machine. Here are the characteristics:
HDD -10Gb
RAM - 512Mb
NIC - 100Mbit
CPU - virtual analogue of Pentium 3
DNS - the most undemanding service. Do not worry, put the cheapest option.