PCI Error Handling and Error Recovery Marketing White Paper

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Table 1: PCI / PCIe Card Recovery with PCI Error Recovery Feature
Event Time Taken
PCI / PCIx slot card
recovery
In the range:
10 secs – 2.5 mins
PCIe card recovery ~ 6 secs
Refer to concurrent dump whitepaper (link provided below) for details on time taken for the system to
recover from MCA due to PCI I/O errors, without error recovery functionality.
http://docs.hp.com/en/V3crashDump1/11.31DumpWhitePaper.pdf
Types of Error Recovery
The PCI/PCIe cards can be recovered from the errors either manually or automatically.
Manual recovery, also known as Error Handling, is supported on HP-UX 11i v2 OS. In this type of
error recovery, the PCI / PCIe cards are isolated due to errors and must be manually recovered. Users
can use olrad (1M) command or Attention Button to recover the cards manually.
Automatic recovery, also know as Error Recovery, is supported on HP-UX 11i v3 OS. In this type of
error recovery, the PCI / PCIe cards that are isolated because of errors are automatically recovered
by the core PSM (Platform Support Module).
Table 2 provides the error recovery OS support details.
Table 2: Error Recovery OS Support Details
Types of
Error
Recovery
OS Support
Manual error
recovery
On HP-UX 11i v1 and HP-UX 11i v2 systems,
users are required to manually recover* cards from PCI
errors.
Non hot-pluggable slots are not supported on HP-UX 11i v1
and HP-UX 11i v2 systems.
Automatic error
recovery
On an HP-UX 11i v3 system, PCI errors are recovered
automatically.
If automatic recovery fails, users can attempt to manually
recover* cards on hot-pluggable slots but cannot manually
recover cards on non hot-pluggable slots.
Note: The PCI Error recovery feature is neither supported on shared/switched hot-pluggable slots on
HP-UX 11i v1, HP-UX 11i v2, and HP-UX 11i v3 Operating Environments, nor on Core IO on HP
Integrity platforms.
*Manual recovery may also fail if there is persistent error condition.