Backup using Dell powervault 124T

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http://serverfault.com – I connected my Dell PowerVault 124T to my Windows Server using SCSI cable, I set IP and Address mask for remote connection on my Dell device. I red on Dell page that Symantec Backup Exec is compatible software with my Dell PowerVault 124T. Is there any other (free) software that I can use with my Dell backup device, or Symantec is the only one? If I buy Symantec software, do I need anything else, or I can backup my server immediately? (HowTos)