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  1. Home
  2. NetBackup™ for VMware Administrator's Guide
  3. Appendix D. Backup of VMware raw devices (RDM)
  4. About VMware raw device mapping (RDM)
NetBackup™ for VMware Administrator's Guide

About VMware raw device mapping (RDM)

VMware raw device mapping mode (RDM) allows a virtual machine to directly access physical disks. With raw device mapping, a VMware virtual machine can use large storage devices such as disk arrays. Access to the data on an RDM disk is faster than to a fully virtualized disk (vmdk file). An RDM disk can be locally attached to the ESX server or configured on a Fibre Channel SAN.

NetBackup supports the disk arrays that are configured on a virtual machine as RDMs.

Note:

NetBackup cannot back up the RDM by means of a VMware backup host.

For notes and restrictions on NetBackup support for VMware RDM, see the following Veritas tech note:

Support for NetBackup in virtual environments

http://www.veritas.com/docs/000006177

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Appendix D. Backup of VMware raw devices (RDM)

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Configurations for backing up RDMs

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