Question: Would my web host move my VPS from one node to a different node?
Answer: Yes, your web host may move your virtual private server (VPS) from its existing node to a different node. There can be many different reasons why your web host may decide to do this.
Your upgrade or downgrade your VPS
If decide to upgrade or downgrade your VPS plan than your web host may have to move you to a different VPS node (actual physical server that contains a lot of VPS instances). If the node that contains your VPS is setup to only have VPS plans with 4 GB of memory and you decide to upgrade to a VPS with 8 GB of memory. Your web host may transition your VPS from the existing node that your VPS is on to a node that only houses 8 GB VPSes. The new node will probably have more resources and contain less VPS users because the VPSes on that node may have plans with more resources. If decide to downgrade than the node your VPS gets moved to may contain more users because the VPS instances on that node have less resources.
The existing node has a security, software, or hardware issue
Your web host may decide they need to carry out security or software maintenance on that node. The maintenance may take an extended period of time so they have decide its better to move everyone to another node. Another reason is that the node you are on may have hardware issues and your web host needs to swap or troubleshoot so they want you on another node.
Complaints about performance
If you have recently opened a lot of tickets about performance issues or slow downs. Your web host may of noticed one or a few users on your existing node using a lot of resources. These other users may be using their respective VPS plans within the resource limits. Your web host may of not forecasted or anticipated a user using close to their VPS limits. Your VPS may not be using all its allocated resources and you have recently complained about the performance issues. Your web host noticed and decided to move your VPS to another node with a lower load or another node with not a lot of users. If they can move you to another node and know that node wouldn’t negatively impact you than your web host may do that. Your web host may also move your VPS to a different node if you asked them to do so.