Interface Card Critical Resource Analysis(CRA) Whitepaper for HP-UX 11i v3

Because of the above reasons, the requested unload operation will not be allowed by CRA to
proceed and the operation will fail with CRA_DATA_CRITICAL error.
If this operation must be performed for system administration purposes, the user must re-assign all the
IP addresses configured on the ports of the NIC, for which the driver is about to be unloaded to
alternative NIC card(s) controlled by different NIC driver than the one about to be unloaded.
Follow the procedure in Scenario 1 to delete and re-assign the IP addresses.
Scenario 5
System Configuration:
HP-UX system is running with a multi-function combo card (that is, a card with
NIC and mass-storage ports) and an IP address is assigned to the NIC port.
Also, a storage device with a single lunpath and used as critical resource, such as boot/dump/swap
device, Service Guard quorum disk, is connected to the mass-storage port of the combo card.
User Scenario:
Replace the card with another card of same model.
Or
Delete and add a different type of card which can be claimed by the same or different driver.
Operation Performed:
# olrad –C | -r | -d <slot id>
Criticality reported by CRA:
CRA_SYSTEM_CRITICAL
Explanation and user action required:
The olrad(1M) command with –C option reports the resource usage and its criticality.
The olrad(1M) with –r or –d option (if it were to be allowed) will render the boot/dump/swap device
and Service Guard quorum disk unavailable, thereby resulting in system crash, hang, or any other
indeterminate system state.
Because of the above reasons, the requested olrad operations will not be allowed by CRA to proceed
and the operation will fail with CRA_SYSTEM_CRITICAL error.
If any of these operations must be performed for system administration purposes, before performing
these olrad operations, ensure that the system critical storage device is reachable through an
alternative healthy card; also, re-assign the IP address configured for the NIC port of the combo card
to an alternative NIC (either with a combo card of similar type or separate NIC and mass-storage
interface cards).
VLAN and APA Configuration Scenarios
Scenario 6
System Configuration:
HP-UX System is running, which has a single or multi-port Network interface
card (NIC), with one or more NIC ports configured with VLAN and IP addresses and connected to
network.
User Scenario:
Replace the card with another card of same model.
Or
Delete and add a different type of card which can be claimed by the same or different driver.
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