Neverfail System Plug-in - Online Help

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About Neverfail System Plug-in

The Neverfail System Plug-in for Neverfail Heartbeat adds system performance monitoring features to identify critical hardware and operating system performance issues that could affect system availability.

Supported Versions of Microsoft Windows

x86 Platform (32-bit hardware)

  • Microsoft Windows 2003 Standard / Enterprise / R2 with SP1 or SP2
  • Microsoft Windows 2008 Standard / Enterprise with SP1 or SP2

x64 / Intel 64 Platform (64-bit hardware)

  • Microsoft Windows 2003 Standard / Enterprise / R2 with SP1 or SP2
  • Microsoft Windows 2008 Standard / Enterprise with SP1 or SP2
  • Microsoft Windows 2008 R2 Standard / Enterprise / Datacenter
NOTE: The IA-64 Itanium Platform is not supported.

Install and Uninstall the Neverfail System Plug-in Using the Neverfail Heartbeat Management Client

Setup.exe automatically installs the Neverfail System Plug-in along with Neverfail Heartbeat or Neverfail Replicator. To upgrade the Neverfail System Plug-in, you can use the Neverfail Heartbeat Management Client and the procedures below to install and uninstall the Plug-in.

Note: Plug-ins should be installed only on the active server. Installation of a plug-in on a passive server may cause an Exception to occur.

Install the Neverfail System Plug-in

  1. Unzip the Neverfail System Plug-in to a convenient location.
  2. Launch the Neverfail Heartbeat Management Client.
  3. Navigate to Applications : Plugins .
  4. Click Install... The Install Plugin dialog appears.
  5. Click Browse... and navigate to the location of the SystemNFPlugin.dll file.
  6. Click OK to complete the installation.

Uninstall the Neverfail System Plug-in

  1. Launch the Neverfail Heartbeat Management Client.
  2. Navigate to Applications : Plugins .
  3. Select the Plug-in to install from the list.
  4. Click Uninstall... A confirmation message appears.
  5. Click Yes .  The Plug-in is uninstalled.
When the Plug-in is uninstalled, the associated files are not removed. This is by design for future functionality.  To remove these files:
  1. Copy the contents of the r2\plug-ins\<sponsor>\<version> folder to a different location such as C:\temp.
  2. Delete the contents of the r2\plug-ins\<sponsor>\<version> folder.
  3. To reinstall the plug-in, when prompted for the location of the plug-in files, navigate to the new folder location (C:\temp).
NOTE: As an alternative, reinstallation can be accomplished by using the download files from the original download location after removing the plug-in.

Monitoring

Monitoring the system environment can be broadly categorized as:

  • Active Server and Service Availability Monitoring
  • Application and Performance Monitoring

Active Server and Service Availability Monitoring

Neverfail monitors the availability of a server by sending continuous heartbeat signals via the Neverfail Channel to the other server in the pair. The “Yes I am alive” response ensures that not only is the other server powered-up, but also that it is available if needed. The heartbeat signal interval is configurable from the Neverfail Management Client.

Application and Performance Monitoring

Neverfail monitors general system performance via the Neverfail System Plug-in. The Neverfail System Plug-in performs this operation by checking select WMI counters at predetermined intervals to ensure that results of the check are within defined parameters. Neverfail System Plug-in uses 'Rules' to take action should a check reveal results outside of the defined parameters.

NOTE: Many of the rules listed below are provided in the disabled state because default values cannot be provided as these values depend upon the server and application load.

Rules

The following Performance Monitoring Rules are installed by the Neverfail System Plug-in:

  • DiskAvgSecsPerRead
  • DiskAvgSecsPerWrite
  • DiskIO
  • DiskQueueLength
  • DiskReadsPerSec
  • DiskWritesPerSec
  • DiskWriteable
  • FreeDiskSpace
  • FreeDiskSpaceOnDrive
  • MemoryCommittedBytes
  • MemoryCommittedBytesPercent
  • MemoryFreePTEs
  • MemoryPageReadsPerSec
  • MemoryPageWritesPerSec
  • MemoryPagesPerSec
  • MemoryPagingFileUseage
  • PageFaultsPerSec
  • ProcessorIntsPerSec
  • ProcessorLoad
  • ProcessorQueueLength
  • RedirectorBytesTotalPerSec
  • RedirectorNetworkErrorsPerSec
  • ServerBytesTotalPerSec
  • ServerWorkItemShortages >= 3
    If the rule for server work item shortages is triggered, consult Microsoft documentation on setting the registry values for InitWorkItems or MaxWorkItems accordingly.
  • ServerWorkQueueLength
  • SystemContextSwitches

To configure/modify the Rules :

  1. Launch the Neverfail Heartbeat Management Client.
  2. Navigate to Applications : Rules .
  3. Select the Rule to configure or modify from the list of Rules.
  4. Click Edit... near the top of the Rules pane. The Edit Rule dialog appears.
  5. Configure or modify the following fields:
    • Condition: (the condition being evaluated)
    • Duration: (the length of time the condition exists)
    • First Failure: (action to take upon first failure) The default is set to Alert .
    • Second Failure: (action to take upon second failure) The default is set to Alert .
    • Third Failure: (action to take upon third failure) The default is set to Alert .
  6. Click OK to save your changes.
  7. NOTE: This dialog also can be used to enable and disable the selected Rule.

    Tasks

    There are no configurable Tasks associated with this plug-in.

    Protected Services

    The Neverfail System Plug-in does not define any protected services.

    Protected Data

    The Neverfail System Plug-in does not define any protected files or folders.

    Automatic Filter Discovery

    The Neverfail System Plug-in does not provide Automatic Filter Discovery because there are no protected sets defined.


    Applies To

    Neverfail System Plug-in


    Related Information

    None

KBID-1379

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