HP StorageWorks Reference Information Storage System V1.1 Administrator Guide (February 2005)

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Chapter 2: Platform Control Center Tour of PCC user interface
2-12 HP StorageWorks Reference Information Storage System Administrator Guide, February 2005
Hosts and services are monitored by polling. You schedule polling intervals
for services, but host polling is purposely kept to a minimum. Depending on
the polling interval, there is more or less delay between occurrences on the
system and reporting those occurrences in the PCC interface. In general, a
host is polled only at system startup and after one or more service checks
indicate a potential host problem. As long as services appear to be
functioning correctly (
OK ), the host is assumed to be healthy ( UP ). You can
selectively enable or disable hosts and services polling.
If monitoring indicates a host is not functioning correctly (
DOWN ), none of its
services are available (they can have any status except
OK ). If a service has
CRITICAL status, but the host is UP , the service probably needs to be
restarted.
See Also
• Host and service status values , on page 2-14
Statuses and states
Various PCC views show current life cycle states of smart cells or status values
of particular hosts or services. Status values measure relative health, and
can be associated with a
status condition conveying a measure of confidence in
the reported value. This section defines possible life cycle states, status
values, and status conditions.
For example, the health of a smart cell in the life cycle state
DEAD can be
reported with the host status value
DOWN . If the host status value has been
checked the required number of times, the status condition is reported as
HARD (otherwise, it is SOFT ).
PCC views (see
User interface components , on page 2-3) often use “status” and
“state” loosely and interchangeably when referring to hosts and services.
“State” is always used when referring to smart cell life cycle states, but
“status” and “state” are both used when reporting smart cell health,
regarding it as a host like any other. PCC views also refer to status conditions
as “states” or “state types.”
System component status is color coded:
green indicates normal operation;
red indicates component has stopped or failed; yellow indicates a warning.
See
Host and service status values , on page 2-14.