Anti-virus software settings/configuration may negatively impact a backup job's throughput rate/speed, especially when targeted to Backup-to-Disk (B2D) locations
2. Add an exclusion for any backup to disk locations.
3. Temporarily disable any "On Access Scanning" features the anti-virus software may have.
4. If User has got McAfee Antivirus enterprise 8.8.0 then go to on access default process policies and Select scan item tab. Then uncheck "Scan when writing to disk". Then go to the remote pc and media server and Click force policies from Mcafee Console.