Overview

This page displays basic information regarding the high-availability cluster and member servers. In addition, this page provides tools to perform maintenance on high-availability clusters and member servers.

High-Availability Cluster Status

This field displays the overall status of your high-availability cluster, alerting you to any errors. The following is a table of possible conditions displayed in this field:

Status Description
Healthy The overall condition of your high-availability cluster is good.
Loading The system is loading the cluster status. Switchover cannot be performed until the status loading is finished. Please refer to Switchover.
Configuring The system is being configured. Switchover cannot be performed until the configuration is completed.
Warning The status of HA cluster is abnormal, but the services are still functioning. Switchover may not be performed in this situation.
Danger Both the active and passive servers are malfunctioning, or the storage is crashed. The high-availability cluster is unable to function normally. Please check the status of all storage spaces (e.g. RAID Groups, Disk Groups, volumes, and iSCSI LUNs). Switchover cannot be performed in this situation.

Warning Messages

The following table displays warning messages that might appear when an error occurs in the system. When more than one warning message appears, you can navigate between them with the forward/backward buttons.

Warning/Error Description
There is no passive server in this high-availability cluster The information of passive server is not available. Please make sure the passive server is connected correctly. In this case, switchover will be unavailable.
Failed to detect the passive server This error might occur because the passive server is offline or the active and passive servers cannot communicate via Heartbeat connection. In this case, switchover will be unavailable.
Failed to perform failover A failover has been triggered on the active server but failed. In this case, the active server will not attempt another failover. To eliminate this error, follow the steps below:
  1. Try to sort out the problems in the high-availability cluster.
  2. Reboot the passive server.
  3. Perform a switchover by clicking Manage > Switchover.
Monitored target error An error occurred in one or more monitored targets, including system status, service, or network interface.
Error(s) have occurred in the connection between the expansion units and active/passive server The expansion units are not correctly connected to the active or passive server. Please make sure their connection to the active server is correct, and setup the same connection to the passive server. In this case, switchover will be unavailable.
A volume has been degraded A storage space (e.g. RAID Group, Disk Group, volume, iSCSI LUN and SSD cache) is degraded. Please check the Storage Status page.
A volume has been crashed A storage space (e.g. RAID Group, Disk Group, volume, iSCSI LUN and SSD cache) is crashed. Please check the Storage Status page. Failover will be performed automatically if the passive server manages to recognize the drives that the active server has failed to access. Otherwise, switchover will be unavailable.
Heartbeat connection is lost This error might occur due to Heartbeat connection failure. In this case, switchover will be unavailable.
Hardware malfunction This error might occur due to hardware (e.g., power unit or system fan) failure on the active server or passive server..
Different physical RAM size This error might occur due to mismatched physical RAM size on the active and passive servers. In this case, switchover will be unavailable.
No static IP has been assigned to this high-availability cluster This error might occur due to lack of a static IP for the high-availaility cluster. In this case, switchover will be unavailable.
There is no static IP on monitored interface This error might occur due to lack of a static IP for the monitored interface. In this case, switchover will be unavailable.
Recovering passive server Passive server recovery is in progress. In this case, switchover will be unavailable.
Upgrading passive server The system is upgrading the passive server. In this case, switchover will be unavailable.

High-Availability Cluster "Manage" Button

This button is located beneath the high-availability cluster information. It includes the following operations:

Note:

Server Diagram and Information

The server diagram shows the server status. The location corresponds to the side of modules to which the server is connected. Mouse over it to get more details.

It includes the following situations:

Note:

Server information includes the following entries. It shows N/A if no passive server is detected.

Connectivity status between servers

This section contains images between the active and passive servers. It includes the following situations:

Network interface status

This section contains images between servers and data network. It includes the following situations:

Shared Storage Diagram and Information

Shared storage diagram shows the connectivity status between the servers and shared storage. Mouse over it to get basic information.

It includes the following situations:

Shared storage basic information includes the following entries. Go to Storage Manager for more detailed information.