Veritas InfoScale™ 7.3.1 Virtualization Guide - Linux on ESXi
- Section I. Overview
- Overview of Veritas InfoScale solutions in a VMware environment
- Introduction to using Veritas InfoScale solutions in the VMware virtualization environment
- Introduction to using Dynamic Multi-Pathing for VMware
- About Veritas InfoScale solutions support for the VMware ESXi environment
- Overview of Veritas InfoScale solutions in a VMware environment
- Section II. Deploying Veritas InfoScale products in a VMware environment
- Getting started
- Getting started
- Section III. Use cases for Veritas InfoScale product components in a VMware environment
- Storage to application visibility using Veritas InfoScale Operations Manager
- About storage to application visibility using Veritas InfoScale Operations Manager
- About discovering the VMware Infrastructure using Veritas InfoScale Operations Manager
- About the multi-pathing discovery in the VMware environment
- About near real-time (NRT) update of virtual machine states
- 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 I/O performance using SmartPool
- Improving data protection, storage optimization, data migration, and database performance
- Protecting data with Veritas InfoScale product components in the VMware guest
- Optimizing storage with Veritas InfoScale product components in the VMware guest
- Migrating data with Veritas InfoScale product components in the VMware guest
- Improving database performance with Veritas 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
- Configuring storage
- Storage to application visibility using Veritas InfoScale Operations Manager
- Section IV. Reference
About I/O performance with Dynamic Multi-Pathing in the hypervisor
When you install DMP in the hypervisor, DMP provides visibility into the I/O paths and performance. DMP provides information such as the active I/O policy, the number of paths, and the number of active/enabled paths. You can view real-time storage performance statistics directly within the vSphere Client. The datacenter view of DMP enables you to determine which storage arrays are attached to which ESXi servers. The datacenter view also provides I/O performance details at the VMDK level. This feature provides additional information that you can use to understand I/O loads within individual guests and the actual subcomponents of the disks assigned to the guests.
When you use Dynamic Multi-Pathing for VMware in the hypervisor, you can use the I/O statistics from DMP to evaluate the performance. You can identify any I/O bottlenecks in the guests. If you also have DMP running in the individual guests, you can correlate the I/O statistics to the particular guests.
When you determine a bottleneck or I/O performance issue, you can use the native VMware functionality to resolve the issues. Using DMP and VMware together, you can achieve the best performance. For example, you can use vMotion to move the storage from one datastore to another. This feature lets you more easily balance I/O load across the virtual machines.
VOM can aggregate the statistics over time. You can use VOM to analyze the trends so that you can use the statistics for capacity planning. You can determine to which datastores you should allocate new guests, based on the workflow and not solely on the space that is available.
To improve I/O performance using DMP, install DMP on VMware in the hypervisor.
See the Dynamic Multi-Pathing Installation Guide - VMware ESX.
To correlate the I/O statistics to the particular guests, install DMP in the guests as either standalone DMP for Linux or as a component of Storage Foundation, Storage Foundation High Availability, or Storage Foundation Cluster File System High Availability.
See the Installation Guide for your product.