Veritas InfoScale™ 7.4.1 Virtualization Guide - Linux on ESXi
- Section I. Overview
- About Veritas InfoScale solutions in a VMware environment
- Section II. Deploying Veritas InfoScale products in a VMware environment
- Getting started
- Understanding Storage Configuration
- Section III. Use cases for Veritas InfoScale product components in a VMware environment
- Application availability using Cluster Server
- Multi-tier business service support
- Improving storage visibility, availability, and I/O performance using Dynamic Multi-Pathing
- How DMP works
- Improving data protection, storage optimization, data migration, and database performance
- Protecting data with InfoScale product components in the VMware guest
- Optimizing storage with InfoScale product components in the VMware guest
- Migrating data with InfoScale product components in the VMware guest
- Improving database performance with InfoScale product components in the VMware guest
- Setting up virtual machines for fast failover using Storage Foundation Cluster File System High Availability on VMware disks
- About setting up Storage Foundation Cluster File High System High Availability on VMware ESXi
- Configuring coordination point (CP) servers
- Section IV. Reference
About application availability with Cluster Server (VCS) in the guest
Using VCS virtual-to-virtual or in-guest clustering in a VMware environments provides high availability of applications inside the guest by providing protection from host failures, hardware failures, OS crashes and also application failures at software layer. For example, in cases of application hang, file-level corruption at the OS level cannot be resolved with a reboot.
Since there is a cost involved in maintaining standby virtual machines (VMs), you may choose to protect only specific applications using VCS in-guest and protect the remaining applications using VMware HA. By using VMware HA in conjunction with VCS in the guest, when a host fails, standy VCS nodes running on that host are automatically restarted by VMware HA on a new host without the need for user-intervention, potentially eliminating the need to maintain multiple standbys.