The specifications of the SmartVPS plans can be found on ICDSoft's managed VPS page.
The disk space, inode, RAM, and CPU core limits are hard limits. These are limits that cannot be exceeded.
System data such as mail indexes, auxiliary MySQL data, etc. is not counted towards the disk and inodes quotas of individual accounts. However, system data is counted towards the total disk and inodes quotas of the VPS. The "Server Resource Utilization" graph in the Manage Server section for each SmartVPS plan shows the total disk space and inodes usage of the VPS, which includes both system and user data.
The traffic limit is a soft limit for the parent account, and a hard limit for child accounts. The parent account won't be stopped from accumulating traffic over the specified limit. In case this happens, you will be contacted by our account department to arrange an overtraffic settlement.
Child accounts that exceed their monthly traffic limit (note that this is a limit which you define) will have their Web, Cron, FTP, Database, and SSH services disabled automatically. You can update the traffic limit and reactivate the suspended services for a child account via its Manage Resources section in the Account Panel.