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

# scsimgr disable –H <boot lunpath>
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 above operations with scsimgr and olrad (1M) with –r or –d options (if it were to be allowed) will
render the boot lunpath unavailable. This operation will result 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 a CRA_SYSTEM_CRITICAL error.
If any of these operations must be performed for system administration purposes, the user must ensure
that the boot disk is reachable through an alternative path. In case of the olrad operation, the
alternative path can be configured using another healthy card. For the scsimgr operation, a different
port of the same card (if it is a multi-port card) or another card can be used to configure the alternate
path. Once the alternate paths are configured thus, the above operations can be performed.
Scenario 2
System Configuration: HP-UX OS running from a boot disk with multiple lunpaths which originate from
different ports of the same card
(for example, AB379B dual ported 4GB FC card).
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.
Though there are multiple lunpaths to the boot disk, the olrad(1M) with –r or –d options (if it were to
be allowed) will render all the boot lunpaths unavailable because all lunpaths are from a single card
with multiple ports. This will result 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 without resulting in
system instability, the user must ensure that the boot disk is reachable through an alternative healthy
card before performing the above operations.
Scenario 3
System Configuration:
A running HP-UX OS is configured with an alternate boot disk under an HBA.
Operation Performed:
# olrad –C | -r | -d <slot id>
Or
# scsimgr disable –H <alternate boot path>
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