What is the best backup software for windows server 2012?

• Data Protection Manager (DPM) 
• Symantec Backup Exec

I'd vote for Veem software however if you're using Vmware hosted servers you don't need a backup rather a daily snapshot of the server is enough.

One of the best solutions is to have symantec backup exec 

Symantec Backup Exec

CA Arcseve

Acronis Backup & Resotre

Acronis Backup Advanced for Windows Server is the best-in-class

Acronis Backup and Restore

Symantec Backup

Windows NT Backup

Symantec Backup Exec 4/5Symantec Netbackup 4/5

Acronics True Image 3.6/5

There are a lot of backup s/w available in the market, they equally give the same result, plus the badget plays an important role. The technologies such as virtualization solutions may not need backup , instead need high availability and failover.

If its VMware its VeemBackup solution and on physical server it will be acronis/Symantec

Symantec, very easy and without bugs

Symantec Backup is the best.