Configuring System Settings : Setting Alarm Parameters
  
Setting Alarm Parameters
Alarms have rising and reset thresholds. When an alarm reaches the rising threshold, it is activated; when it reaches the lowest (or reset) threshold, it is reset. After an alarm is triggered, it is not triggered again until it has fallen below the reset threshold.
You set the alarm thresholds in the Alarms page. Enabling this feature is optional.
To set alarm parameters
1. Choose Settings > System Settings: Alarms to display the Alarms page.
2. Complete the configuration using the controls described in this table.
Control
Description
Backup Integration
Enables an alarm and sends an email notification if the backup-integration module encounters an error.
By default, this alarm is enabled.
Block-disk
Enables an alarm and sends an email notification if the block-disk module encounters an error.
By default, this alarm is enabled.
This alarm applies only to Core-v implementations.
Core Disaster Recovery
Enables an alarm and sends an email notification if the system encounters any of the following issues with replication:
•  The Journal LUN size is not large enough to support the configured replica LUNs.
•  Replication latency to the secondary data center is over 150 ms.
•  Replication status for one or more LUNs is “suspended.”
•  Any type of corruption is detected on the Journal LUN for any of the replica LUNs.
•  No connections to the peer data center.
•  The Journal LUN is not found on the storage array because it was accidentally unmapped from the backend, or the connection to the storage array was lost.
By default, this alarm is enabled.
CPU Utilization
Enables an alarm and sends an email notification if the average and peak threshold for the CPU utilization is exceeded.
•  Rising Threshold - Specify a whole number to represent a percent of CPU utilization.
•  Reset Threshold - Specify a whole number to represent a percent of CPU utilization.
This alarm is enabled by default, with a rising threshold of 90 percent and a reset threshold of 70 percent.
Disk Full
Enables an alarm and sends an email notification if the disk space is full.
Select one or more of the following system partitions:
•  Partition "/boot" Full
•  Partition "/bootmgr" Full
•  Partition "/config" Full
•  Partition "/data" Full
•  Partition "/var" Full
By default, all Disk Full alarms are enabled.
Edge Service
Enables an alarm and sends an email notification if Core loses connection with one of its configured Edges.
By default, this alarm is enabled.
Hardware
Enables an alarm and sends an email notification if one or more hardware failures occur.
This alarm setting also enables you to select one or more types of hardware failure (fan error, memory error, and so on), including:
•  Fan Error - Enables an alarm and sends an email notification if a fan is failing or has failed and needs to be replaced. By default, this alarm is enabled.
•  Flash Error - Enables an alarm when the system detects an error with the flash drive hardware. By default, this alarm is enabled.
•  IPMI - Enables an alarm and sends an email notification if an Intelligent Platform Management Interface (IPMI) event is detected.
•  Memory Error - Enables an alarm and sends an email notification if a memory error is detected, for example, when a system memory stick fails.
•  Other Hardware Error - This alarm indicates that the system has detected a problem with the hardware. The alarm clears when you add the necessary hardware, remove the nonqualified hardware, or resolve other hardware issues. The following issues trigger the hardware error alarm:
•  The appliance does not have enough disk, memory, CPU cores, or NIC cards to support the current configuration.
•  The appliance is using a dual in-line memory module (DIMM), a hard disk, or a NIC that is not qualified by Riverbed.
•  DIMMs are plugged into the appliance but the system cannot recognize them because the DIMM modules are in the wrong slot. You must plug DIMM modules into the black slots first and then use the blue slots when all of the black slots are in use.
•  A DIMM module is broken and you must replace it.
•  Other hardware issues.
By default, all Hardware alarms are enabled.
•  Power Supply - Enables an alarm and sends an email notification if an inserted power supply cord does not have power, as opposed to a power supply slot with no power supply cord inserted. By default, this alarm is enabled.
High-Availability
Enables an alarm and sends an email notification if one of the Cores in a high-availability environment fails.
By default, this alarm is enabled.
iSCSI Service
Enables an alarm and sends an email notification if the iSCSI configuration fails.
By default, this alarm is enabled.
Licensing
Enables an alarm and sends an email notification if the appliance is unlicensed, if there is an issue with the autolicense, the licenses have expired, the licenses are about to expire, or the model is unlicensed.
By default, all Licensing alarms are enabled.
Link Duplex
Enables an alarm and sends an email notification when an interface was not configured for half-duplex negotiation but has negotiated half-duplex mode. Half-duplex significantly limits the optimization service results.
The alarm displays which interface is triggering the duplex alarm.
By default, this alarm is enabled.
You can enable or disable the alarm for a specific interface. To enable or disable an alarm, choose Settings > System Settings: Alarms and select or clear the check box next to the link name.
Link I/O Errors
Enables an alarm and sends an email notification when the link error rate exceeds 0.1% while either sending or receiving packets. This threshold is based on the observation that even a small link error rate reduces TCP throughput significantly. A properly configured LAN connection experiences very few errors.
The alarm clears when the rate drops below 0.05%.
You can change the default alarm thresholds by entering the alarm link_io_errors err-threshold <threshold-value> CLI command at the system prompt. For details, see the Riverbed Command-Line Interface Reference Manual.
By default, this alarm is enabled.
You can enable or disable the alarm for a specific interface: for example, you can disable the alarm for a link after deciding to tolerate the errors. To enable or disable an alarm, choose Settings > System Settings: Alarms and select or clear the check box next to the link name.
Link State
Triggers an alarm if network interface link errors are detected. If you receive this alarm, check the status of the interface to begin diagnosing the problem.
LUN Status
Enables an alarm and sends an email notification if the connection to the LUN fails or there is an issue with LUN resizing.
By default, this alarm is enabled.
Memory Paging
Triggers an alarm if the Core detects extended memory paging activity.
If 100 pages are swapped every couple of hours, the appliance is functioning properly. If thousands of pages are swapped every few minutes, contact Riverbed Support.
By default, this alarm is enabled.
Process Dump Creation Error
Enables an alarm and sends an email notification if the system detects an error while trying to create a process dump.
This alarm indicates an abnormal condition in which the system cannot collect the core file after three retries. It can be caused when the /var directory is reaching capacity or by other conditions. When the alarm is raised, the directory is blacklisted.
By default, this alarm is enabled.
Secure Vault
Enables an alarm and sends an email notification if the system encounters a problem with the secure vault:
Secure Vault Locked - Indicates that the secure vault is locked. To optimize SSL connections or to use RiOS data store encryption, the secure vault must be unlocked. Go to Settings > Security: Secure Vault and unlock the secure vault.
For details, see Unlocking the Secure Vault.
Snapshot
Enables an alarm and sends an email notification if the connection to any of the snapshot storage arrays fails.
By default, this alarm is enabled.
SSL
Enables an alarm if an error is detected in your SSL configuration. By default, this alarm is enabled.
SteelFusion Core configuration status
Enables an alarm and sends an email notification if the Core configuration has been reverted to a previous version.
By default, this alarm is enabled.
Temperature
•  Critical Temperature - Enables an alarm and sends an email notification if the CPU temperature exceeds the rising threshold. When the CPU returns to the reset threshold, the critical alarm is cleared. The default value for the rising threshold temperature is 70ºC; the default reset threshold temperature is 67ºC.
•  Warning Temperature - Enables an alarm and sends an email notification if the CPU temperature approaches the rising threshold. When the CPU returns to the reset threshold, the warning alarm is cleared.
•  Rising Threshold - Specifies the rising threshold. The alarm activates when the temperature exceeds the rising threshold. The default value is 70 percent.
•  Reset Threshold - Specifies the reset threshold. The alarm clears when the temperature falls below the reset threshold. The default value is 67 percent.
After the alarm triggers, it cannot trigger again until after the temperature falls below the reset threshold and then exceeds the rising threshold again.
3. Click Apply to apply the settings to the current configuration.