SNMP Configuration and Management Manual

Host Resources Subagent
SNMP Configuration and Management Manual—424777-006
11-5
Proactive Hardware Management
The group and trap definitions, identified by a check mark in the following list, reside in
the zhrm subtree within the subtree registered to HP:
iso (1)
identified-organization (3)
dod (6)
internet (1)
private (4)
enterprises (1)
tandem (169)
nonstopsystems (3)
zhrm (180)
zhrmTableInfo (1) √
zhrmThreshold (2) √
zhrmDevUnavail (3) √
zhrmSaProcess (4) √
zhrmRefresh (5) √
zhrmTraps (7) √
Proactive Hardware Management
You can configure the Host Resources Subagent to generate traps that describe
situations that might require system operator intervention. For example:
•
A particular device is no longer running.
•
A particular disk is demonstrating critically high usage.
•
A particular CPU is demonstrating critically high RAM usage.
Entries maintained in several MIB groups also support proactive management of
hardware resources:
•
The zhrmThreshold group provides information on device utilization that exceeds a
settable threshold.
•
The zhrmDevUnavail group provides device statistics and highlights unusual
device states.
Refreshing MIB Values
MIB values are always refreshed when a subagent process starts. After startup, to
control its CPU usage, the subagent uses two configurable timers for refreshing MIB
values:
•
A stable object timer controls the rate at which hardware configuration information
is refreshed. Configuration information is relatively static, changing mainly when
devices are added to or removed from the system.