Hi Vivek,
To set up standby database, please refer to link belows:
http://help.sap.com/saphelp_nw70/helpdata/en/45/23882c9f9b4002e10000000a155369/content.htm
Regarding your question, you need to ship the backup log, and you can ship the log from os level in anyway, as long as the log can be used to recovery.
The general to set up standby database is:
1. restore the recent backup from primary database to the standby with "initialize" option
2. do not start database, but continue to do the log recovery
Please note you as soon as the standby database is up, you cannot apply the further log any more.
Once the standby database is online, you have to set up standby solution from beginning.
Best regards,
James