Internal Identifier This is the ID used within the Vagrantfile. It is only used for your internal identification. Hostname The hostname the machine should have. This answer lists all valid characters. Server Name Name your Rackspace server as it will appear in the Rackspace Control Panel. Datacenter Location Dallas (DFW) Chicago (ORD) Northern Virginia (IAD) Sydney (SYD) London (LON) Choose the one closest to you, or your target audience! Server Size 512MB Standard Instance 1GB Standard Instance 2GB Standard Instance 4GB Standard Instance 8GB Standard Instance 15GB Standard Instance 30GB Standard Instance 1 GB General Purpose v1 2 GB General Purpose v1 4 GB General Purpose v1 8 GB General Purpose v1 15 GB I/O v1 30 GB I/O v1 60 GB I/O v1 90 GB I/O v1 120 GB I/O v1 Pricing information. Rackspace charges by the hour, but also shows what a full month would cost.