HP 3PAR StoreServ 7450 4-node HP 3PAR Command Line Interface Administrator& - Page 119
Setting the Raw Space Threshold Alert, Monitoring and Managing the Event Log, HP 3PAR StoreServ
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Groups" (page 78). For details about CPG creation precautions, see the HP 3PAR StoreServ Storage 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, see the HP 3PAR StoreServ Storage Concepts Guide. • The raw space alert is a global threshold that can be set for the storage system 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 NL drives, issue the setsys RawSpaceAlertNL command. • To set a raw space alert for a storage system with FC drives, issue the setsys RawSpaceAlertFC command. • To set a raw space alert for a storage system with SSDs, ssue the setsys RawSpaceAlertSSD command. For each command above, 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 event log is deleted. The 3 MB log size default value can be changed by administrators using the CLI setsys command EventLogSize parameter. 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 Monitoring and Managing the Event Log 119