Hardware fault tolerance

• Fully redundant hardware components
• Self-checking logic with each component
• Immediate fault-detecting isolation
• On-line component replacement
• Remote service and monitoring network
• Disk mirroring
• Power fail ride through recovery
• 100% availability program
  
  

Software fault tolerance

• 100% ABI/API compatibility
• Stratus fault-tolerant services
  • Partnering of subsystem
  • Hot pluggable components
  • Redirect I/O for no "hangs"
• PCI fault-tolerant subsystem
• Remote network interface redundancy
• Utilize HP mirror disk
• No modification to core HP-UX^® kernel
• No modification to file system
• No modification to shared memory