When you post a comment like this comment somewhere in the world that comment has to be stored. We run and maintain the servers that store that comment. There are a total of 20 main server distributed around the world. Having this many servers allows the steem blockchain to stay online 24/7 without any failures. IT is a type of redundancy through mass deployment.
The people like myself that run "backup-witness servers" stand ready to fill in when load is high or when a primary witness server may go off line for any given reason.
We are like the volunteer website hosting company of employees for steemit to put it in a more simple explanation.
When you post a comment like this comment somewhere in the world that comment has to be stored. We run and maintain the servers that store that comment. There are a total of 20 main server distributed around the world. Having this many servers allows the steem blockchain to stay online 24/7 without any failures. IT is a type of redundancy through mass deployment.
The people like myself that run "backup-witness servers" stand ready to fill in when load is high or when a primary witness server may go off line for any given reason.
We are like the volunteer website hosting company of employees for steemit to put it in a more simple explanation.