Working with backup sets : Cloud (Microsoft Office 365) backup sets (Windows) : Restoring a Microsoft Office 365 backup set : Specifying the restore destination
 
Specifying the restore destination
IMPORTANT:  Before restoring Exchange data, you must ensure that the required mailbox already exists and is active in the domain at the destination, whether you select Original location or Alternate location. Otherwise, the restore will fail.
1. On the Select restore location page, select the appropriate options to specify the restore destination and the required details.
IMPORTANT:  The domain name of the network credentials that you provide for the restore activity must be identical to the domain name of the restore destination location, whether you select Original location or Alternate location.
For guidelines on choosing between Original Location and Alternate Location, see Table 3 on page 155 and Table 4 on page 156.
Original location – This option is selected by default. Data will be restored to the original backup source location, that is, the original Microsoft Office 365 account.
Alternate location – This option is available for Exchange Online only.
 
Alternate location on Microsoft Office 365 (Exchange Online)
a) Click >> to open the Select Alternate Server dialog box.
b) Verify that OFFICE.MICROSOFT.COM is shown in the Path field. If not, type OFFICE.MICROSOFT.COM
c) Provide the required credentials for the Microsoft Office 365 cloud server. In the From field, type a full address, not just a domain name.
Examples:
example.com
example.onmicrosoft.com
Alternate location on your premises
a) Click >> to open the Select Alternate Server dialog box.
b) Select Alternate Server.
c) In the Path field, type the IP address, the host name, or a fully qualified domain name (FQDN) of the Microsoft Exchange Server to which you want to restore data on your premises (LAN).
d) Provide the required credentials. In the From field, type a full address, not just a domain name.
Examples:
example.com
example.local
Restore to local disk: Select this option to restore data to a disk location that you specify on the DS-Client computer.
NOTE:  UNC paths are not supported with this option.
Archive restored files to PST: If you have selected the Restore to local disk check box, you can optionally select this option to archive Microsoft Exchange data to a PST file.
During the restore process, a PST file will be created in the path that you specify for the Restore to local disk check box. If the path ends in a file name with a .pst extension, the PST file will take on that file name. If the path does not end in a .pst extension, the mailbox address of the restored items will be used as the file name of the PST file.
NOTE:  If a PST file of the same name already exists in the folder location of the path, the restore process will not overwrite the existing PST file but append to the existing file.
F1 Help: "Select restore location"
2. Select the required options (if available), and then click Next.