# System Maintenance

This chapter describes how to perform the following tasks:

- Change server’s host name.

- Change server IP addresses. You may need to do this when, for instance, you are moving your Plesk server to a new datacenter, and need to reconfigure the Plesk installation to run on new IP addresses.

- Move the directory where virtual hosts reside to another location on the same or another partition. You might want to do this when disk space on the current partition is running out.

- Move the directory where Plesk backup files are stored to another location on the same or another partition. You might want to do this when, for instance, there is insufficient disk space on the current partition to house new backup files, and you want to move them all to a new, larger volume.

- Move the directories that house mail content to another location on the same or another partition. You might want to do this when there is insufficient amount of disk space on the current partition to serve a larger amount of mailboxes, and you want to move them all to a new larger volume.

- Switch the database server engine used by Plesk.

- Stop, start, and restart Plesk-managed services from command line, and access their logs and configuration files.