6.4
Table Of Contents
- Administrator Guide
- Contents
- About This Book
- Getting Started
- Introduction
- Configuring vCenter Server Heartbeat
- System Administration and Management
- Server Protection
- Network Protection
- Application Protection
- Application Protection Overview
- Applications: Applications Tab
- Reset the Application Health Status
- View Application Status
- Setting the Application Timeout Exception
- Remove an Application
- Manually Start and Stop Applications
- Configuring Applications
- Application Maintenance Mode
- Reviewing the State of an Application
- Reviewing the Applications Log
- Filtering Application Log Entries
- Applications: Services Tab
- Applications: Tasks Tab
- Applications: Plug-ins Tab
- Status and Control
- vCenter Server Heartbeat Console
- About vCenter Server Heartbeat Console
- Work with Groups and Pairs
- Add, Edit, Move, and Remove Pairs in VCenter Server Heartbeat Groups
- Review the Status of vCenter Server Heartbeat Groups and Pairs
- Exit vCenter Server Heartbeat Console
- Shut Down Windows Without Stopping vCenter Server Heartbeat
- Controlled Shutdown
- vSphere Client Plug-in
- Uninstall vCenter Server Heartbeat
- Performance Protection
- Data Protection
- Alerts and Events
- Troubleshooting
- Troubleshooting Unexpected Behaviors
- Two Active Servers
- Two Passive Servers
- Synchronization Failures
- Registry Status is Out of Sync
- Channel Drops
- Subnet or Routing Issues
- MaxDiskUsage Errors
- MaxDiskUsage Error Messages
- [L9]Exceeded the Maximum Disk Usage (VCChannelExceededMaxDiskUsageException)
- [L9]Exceeded the Maximum Disk Usage on the ACTIVE Server
- [L9]Exceeded the Maximum Disk Usage on the PASSIVE Server
- [L20]Out of Disk Space (VCChannelOutOfDiskSpaceException)
- Application Slowdown
- Poor Application Performance
- Both Servers Can Accommodate the Initial Load but the Load Has Increased
- One Server Can Provide Adequate Resource Support, but the Other Cannot
- Scheduled Resource Intensive Tasks
- Glossary
Reference Guide
80 VMware, Inc.
Subnet or Routing Issues
In a LAN or WAN deployment, the following connection problems can occur.
LAN Deployment
Incorrectly configured subnets or routing can cause channel problems resulting in poor performance or failure
to connect.
Symptom
The Channel disconnects or fails to connect in a LAN deployment.
Causes
The Channel disconnects or fails to connect due to the Principal (Public) NIC and/or one or more channels
sharing the same subnet.
Resolution
If vCenter Server Heartbeat is deployed in a LAN environment, the Principal (Public) IP address and the
VMware Channel IP address on a server must be in separate subnets. When multiple redundant channels are
present, each must have its own subnet. Check the network configuration for each NIC on both servers in the
pair and correct any issues.
WAN Deployment
Incorrect routing can prevent the active and passive servers from connecting in a WAN environment.
Symptom
The VMware Channel disconnects or fails to connect in a WAN deployment.
Cause
When the VMware Channel disconnects or fails to connect in a WAN deployment, the static route might not
be configured or might be configured incorrectly.
When vCenter Server Heartbeat is deployed in a WAN, the Principal (Public) IP address and the VMware
Channel IP addresses cannot be in different subnets, because there usually is a single network path between
the two servers. Configure a static route between the endpoints to route traffic in the VMware Channel.
Resolution
Refer to knowledge base article 1008451 (vCSHB-Ref-466) - Creating a static route for the VMware Channel
Connection in a WAN Environment for a detailed discussion about WAN channel routing issues, and for
instructions on configuring a static route for the VMware Channel.
MaxDiskUsage Errors
vCenter Server Heartbeat uses queues to buffer the flow of replication data from the active server to the
passive server. This configuration provides resilience in the event of user activity spikes, VMware Channel
bandwidth restrictions, or VMware Channel drops across a WAN deployment. Some types of file write activity
also require buffering as they can cause a sharp increase in the amount of channel traffic. The queues are called
the send queue (on the active server) or the receive queue (on the passive server).