Hard partitions (nPars) offer electrical isolation and cell board granularity, allowing you to service one partition while others are online. With HP-UX 11i v3, those hard partitions actually become Dynamic nPartitions, with the ability to dynamically add or remove a cell, without requiring system reboots for the nPars involved.
Virtual partitions (vPars) are separate operating system instances on the same nPartition or server, with O/S, application and resource isolation. HP-UX 11i Virtual Partitions enable you to dynamically move CPU power or memory between vPars as your workload requirements change. vPars also offers single CPU core granularity.
Integrity Virtual machines have their own separate 'guest' operating system instances, on the same nPartition or server, with different OSs, versions, applications and users, in a fully isolated environment.
HP Integrity Virtual Machines software provides shared processor (with sub-core granularity), shared I/O and dynamic resource allocation based on demand and entitlement.
Resource partitions (created from HP Process Resource Manager) allocate resources to specific applications and users within an operating system.
They offer fully dynamic application processor or sub-processor and percent memory granularity.
