Choosing a data protection method
17
Introduction
Efficiency
Guest backup and restore:
◆ Offers highest level of data deduplication efficiency
◆ Backups do not consume ESX server CPU, RAM, and disk resources
◆ Backups consume small amounts of guest virtual machine CPU, RAM, and disk
resources when backups are occurring
Avamar for VMware Image backup and restore:
◆ Moderate deduplication efficiency
◆ Backups do not consume guest virtual machine CPU, RAM, and disk resources
◆ Backups consume ESX server CPU, RAM, and disk resources when backups are
occurring
Backup and restore
Guest backup and restore:
◆ Applications are gracefully quiesced prior to each backup, ensuring a true “application
consistent” backup
◆ Backups are highly optimized (temp files, swap files, and so forth not included)
◆ Backups are highly customizable (supports full range of include and exclude features)
◆ Database backups support transaction log truncation, and other advanced features
◆ Unused filesystem space is not backed up
◆ Individual file and directory (folder) restores supported
◆ Backup and restore jobs can execute pre- and post-processing scripts
◆ Virtual machines must have a network connection to Avamar server
◆ Virtual machines must be running for backups to occur
Avamar for VMware Image backup and restore:
◆ Image backups are supported for all machines that are currently supported by VMware
◆ Individual file and directory (folder) restores supported for both Windows and Linux
virtual machines
◆ Virtual machines need not have a network connection to Avamar server
◆ Virtual machines need not be running for backups to occur
◆ Unused filesystem space is backed up
◆ Backups not optimized (temp files, swap files, and so forth are included)
◆ Backups can comprise an entire virtual machine image (all drives) or selected drives
(vmdk files)
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