Characteristics
Since about 2000 the focus of HP-UX has increasingly been on enhanced reliability, security, workload management, and partitioning. The reliability is provided through single-system quality and self-healing, and in multi-system installations, clustering technology and application failover on a system outage, as well as error monitoring and correction. HP-UX 11i offers a common root disk for its clustered file system. HP Serviceguard is the cluster solution for HP-UX. HP Global Workload Management adjusts workloads to optimize performance, and integrates with Instant Capacity on Demand so installed resources can be paid for in 30-minute increments as needed for peak workload demands.
Security is integrated in HP-UX, with full 'trusted mode' shipping with v3. Features significantly increased with 11i v2, with the addition of kernel-based intrusion detection, strong random number generation, stack buffer overflow protection, security partitioning, role-based access management, and various open-source security tools.
System partitioning (virtualization) ranges from hardware partitions to isolated OS virtual partitions on cell-based servers, and HP Virtual Machines (VMs) on all Integrity servers. HP VMs support guests running on HP-UX 11i v3 hosts - guests can run Linux, Windows, OpenVMS 8.4 or HP-UX. HP supports online VM guest migration, where encryption can secure the guest contents during migration.
HP-UX 11i v3 scales as follows:
- 128 processor cores
- 2 TB main memory
- 32 TB maximum file system
- 16 TB maximum file size
- 100 million ZB storage
With the acquisition of Compaq in 2001, HP obtained another Unix-based system, Tru64 Unix for AlphaServer hardware platform. HP continues to sell Tru64 UNIX, together with TruCluster software, but discontinued AlphaServer manufacturing in 2007.
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