3 Chapter 3. Live guest relocation (LGR) overview Several reasons exist why it might be necessary to move a running Linux guest virtual machine from one single system image (SSI) member to another. To prepare for live guest relocation (LGR), ensure that the Linux guest has a relocatable configuration and that a matching configuration can be set up on the destination member. Certain configuration attributes can prevent the Linux guest from being relocated. In this chapter, we provide a brief introduction to live guest relocation (LGR). We also describe several major attributes of LGR and factors that affect relocation. We identify the supported configurations for relocation. Also, we describe considerations about memory and paging that support LGR. Additionally, we define relocation domains and business reasons for creating relocation domains. We share the characteristics of relocation domains. We also explain the steps for defining relocation domains and for placing virtual servers into relocation domains. Finally, we outline the required steps to relocate and we conclude with conditions that potentially prevent a successful relocation. © Copyright IBM Corp. 2012. All rights reserved. 23