Slave Servers Requirements

This page describe our recomendations to add a slave server to giss network.

It's based on our experience and the actual requirements of the icecast master/slave infrastructure to allow all the mountpoints in use at one time.

Recomendations to add an icecast slave server to relay all mountpoints

Bandwidth: minimum 20 mbps dedicated up/down

Monthly Transfer: 2TB / month

Server Software: as described in Servers Configuration

Server Hardware: 2,4 Ghz CPU / 512 RAM

And to add an icecast slave server to relay only some mountpoints

If you have X bandwidth and you want to join your server to giss, we recomend to tune icecast params like this:

X bandwith in kbps / 100 kbps (aprox for each connection) = max clients param in icecast conf
max clients paramm in icecast conf / 4 (clients by source) )= max source param in icecast conf

If you have monthly transfer limits in your server you should know that one slave with about 25 sources online at the same time consumes each day about 30GB, so 1TB at month.

This way you can tune params in icecast like this:

X GB monthly transfer allowed / 40 = max source param in icecast
max source param in icecast * 4 (clients by source) = max clients param in icecast conf

Well, it's not a science as you can see. The 4 clients for source is an arbitrary number and the 100 kbps for each connection is more than is usually is. So take this notes only as an aproximation. ;)