HP 3PAR InForm OS 3.1.1 CLI Administrator's Manual

“Common Provisioning Groups” (page 81). For details about CPG creation precautions, refer
to the HP 3PAR InForm OS Concepts Guide.
• Limits for virtual volumes capable of allocating space on demand are also user-configurable
and can trigger alerts. For information about on-demand virtual volume space allocation, refer
to the HP 3PAR InForm OS Concepts Guide.
• The raw space alert is a global threshold that can be set for the storage system in order to
alert administrators when available space on the system falls below a user-specified level.
When the available space on the storage system falls below this user-specified threshold, an
alert is generated.
There are also four default system thresholds which alert you when the available space on the
system falls below 50%, 75%, 85%, and 95% of the total available space on the system.
When the user-defined threshold is set, alerts for system thresholds below the user-defined
threshold are suppressed. The following section describes how to set and change this raw
space alert threshold.
Setting the Raw Space Threshold Alert
• To set a raw space alert for a storage system with Nearline type drives, issue the setsys
RawSpaceAlertNL <threshold> command.
• To set a raw space alert for a storage system with Fibre Channel type drives, issue the setsys
RawSpaceAlertFC <threshold> command.
• To set a raw space alert for a storage system with Solid State Drives (SSD), issue the setsys
RawSpaceAlertSSD <threshold> command.
For each command above, <threshold> is an integer from 100 to 100,000 that represents the
total available space on the system in gigabytes. A value of 0 effectively disables the raw space
alert safety feature. Any alerts for system thresholds below the user-defined thresholds are
suppressed.
Monitoring and Managing the Event Log
The event log has information about all notable occurrences on the system. System events include
all alerts the system has generated and alerts marked as acknowledged or fixed. These system
events are generated and logged in the system event log.
By default, the HP 3PAR Storage System reserves 3 MB for event log entries. However, the actual
default size is 30 MB because the storage system maintains 11 versions of the event log, the current
version for writing new events to the log and the past 10 versions for reading past events. When
11 versions have been written the oldest is deleted. The 3 MB log size default value can be changed
by administrators using the CLI setsyscommand EventLogSizeparameter. An event is logged
if the event log size is changed. The current event log size can be obtained using the CLI showsys
–param command.
cli% showsys -param
System parameters from configured settings
----Parameter----- ---Value----
RawSpaceAlertFC : 800
RawSpaceAlertNL : 0
RemoteSyslog : 1
RemoteSyslogHost : 192.168.6.15
SparingAlgorithm : Minimal
CopySpaceReclaim : 0
EventLogSize : 3M
VVRetentionTimeMax : 336 Hours
116 Managing Events and Alerts