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
VMware, Inc. 85
Chapter 10 Troubleshooting
Symptom
Applications operate normally when the Primary server is active but operate slowly when the Secondary
server is active (or the reverse).
Cause
A large discrepancy occurs in the processing power between the Primary and Secondary servers. One server
can handle the operational load while the other cannot. The load on a server is greater while in the active role
when the protected application starts. Applications on the server pair run successfully when the Primary
server is active, but experience performance issues when the Secondary is active (or the reverse). Problems can
arise even when the more powerful server is active.
Resolution
Both servers must have approximately equivalent processing power, RAM and disk performance. Upgrade
the hardware on one server in the pair so that the two servers have roughly the same performance.
Scheduled Resource Intensive Tasks
Scheduling multiple resource intensive tasks at the same time can adversely impact server performance and
affect application performance.
Symptom
Resource-intense scheduled tasks impact performance at certain times.
Cause
Two or more resource-intense processes run simultaneously or one process performs actions that increase the
load on vCenter Server Heartbeat by triggering additional and sometimes unnecessary replication traffic.
Examples: processes such as backups, database maintenance tasks, disk defragmentation, or scheduled virus
scans.
Resolution
Schedule operations so that they do not overlap and schedule them outside regular working hours, when
fewer users are accessing the protected application and consequently less load on the server.