EMC DL3D 1500 Administrator's Manual page 105

Note: If de-duplication does not complete before the next backup
window occurs, de-duplication of the previous day's backup data will
continue until finished. This can cause your backup window to be
extended. De-duplication of the current backup will not occur until the
backup window expires.
6. Click Apply.
Figure 13 Adding a NAS share
Configuring and Managing Disk Backup
Configuring and managing NAS shares 105