This article can also be found in the Premium Editorial Download "Storage magazine: Hot storage trends and technology for 2010."
Download it now to read this article plus other related content.
W. Curtis Preston, TechTarget's Storage Media Group executive editor and independent backup expert, agrees that both source-side dedupe and CDP are good approaches to VMware backup. They both follow an incremental-forever backup model that produces far less data than traditional backup tools.
VM-specific backup products, such as PHD Virtual Technologies' esXpress, Veeam Software's Backup and Replication, and Vizioncore Inc.'s vRanger Pro were designed from the ground up to handle VMware backup. Their advantages include per-socket rather than per-server licensing fees (though experts and users caution that it doesn't always equate to lower costs); and they enable recovery of the virtual machine disk (VMDK) image for greatly simplified disaster recovery (DR) preparedness, as well as recovery of individual files within the VMDKs. Traditional backup tools operate from within the VM, so they're adept at file-level restore but require multiple steps to restore entire VMDKs. And the VM-specific tools are adding deduplication capabilities.
These products are gaining traction. "[With these VM-specific backup tools] it's faster to recover, it's easier to recover and it's easier to move things around because everything's encapsulated," said Edward Haletky, a virtualization consultant and author of two books about VMware.
Nathan Johnson, manager of IT services at NAI Utah, a commercial real estate company in Salt Lake City, avoided
Welch's, the Concord, Mass., grape juice company, took a different route. George Scangas, manager of IT architecture, said the company initially used CommVault's Simpana to back up its VMs. "With traditional backup, if we had to restore files and folders within the virtual machine, that worked great. If we had to restore the entire virtual machine, that was a 50/50 shot," he said. The company now uses vRanger Pro to back up its virtual machines in combination with Simpana on nonvirtual servers. vRanger Pro backs up the VMDKs to disk, and Simpana includes that disk when it backs up physical servers to tape, a practice followed by many IT organizations.
The traditional backup vendors aren't sitting still. Hewlett-Packard (HP) Co. and Symantec, for example, are working on updates that promise to deliver end-to-end backup for VMware environments and nonvirtual servers. "With Symantec [Veritas NetBackup] and HP Data Protector getting into the market as strongly as they are, [PHD Virtual, Veeam and Vizioncore] have to start looking over their shoulder for their backup product," consultant Haletky said.
In 2010, VM backup won't disappear as a chore at many IT organizations, but better tools are emerging. A year from now, simpler and more effective VM backup processes should be within reach for most storage administrators.
This was first published in December 2009