active hold pending

Hi,

We are currently running a backup for a server and the total size to be backed up is 1TB. some case we need to hold the backup for a while eg after completion of 222gb. Once we right click the running job and select hold option the status goes to "active running hold pending". It is not hold up properly can you suggest me how to get this type of huge data backup to hold. PFB the screen shot.

Thanks in Advance,

Chandra Sudeesh