Interface Card OL* Support Guide

Table 1-3 Frequency Matching Scenarios for Shared Slots (continued)
DescriptionSlot 2Slot 1
If Add is performed first and the added card can perform at the second slots operating
frequency Add succeeds. Otherwise Add fails.
If Delete is performed first, there is no frequency issue. An Add in the other slot succeeds
and the Added card operates at an optimum frequency
DeleteAdd
Replace and Delete succeed. The slot and card operates at the lowest operating
frequency.
When Adding a card to the slot where delete is performed, Add succeeds if the added
card can perform at the other slots operating frequency. Otherwise Add fails
DeleteReplace
PCI Error Recovery
The PCI Error Recovery feature enables you to detect, isolate, and automatically recover from a
PCI error, avoiding a Machine Check Abort (MCA) or a High Priority Machine Check (HPMC).
PCI Error Recovery is enabled by default on the HP-UX 11i v3 operating system.
With the PCI Error Recovery feature enabled, if a PCI error occurs on an I/O bus adapter
containing an I/O card that supports PCI Error Recovery:
• The PCI bus is isolated from further I/O
• The I/O devices are quiesced
• The error is cleared
• The bus is reset
• The devices are resumed
If the devices encounter further errors upon resumption, they will remain stopped. If the devices
are in hotpluggable slots, the olrad command or the attention button can be used to manually
recover. If PCI Error Recovery is disabled and a PCI error occurs, an MCA or HPMC will occur,
then the system will crash.
For detailed information about PCI Error Recovery, see the PCI Error Recovery Product Note, and
the PCI Error Recovery Support Matrix. Both documents can be accessed in the High Availability
category at:
http://docs.hp.com/en/ha.html
24 PCI Card OL* Overview