using rsync and vm to backup freenas

1. FreeNAS backup solution a n opensource N etwork- A ttached S torage server based on freebsd kernel

3. Architecture FreeNAS standby on virtualbox based on win 7

4. Current Information service provided : file sharing,samba hard disk system :single hard disk of HP desptop PC,no raid,no volume management. space information : 140G total,38G used(two years) stable information :2008--2010,stable as a rock HP Desktop

5. Backup Server Information Device information :old IBM x86 pc server,bought in 2003 or 2004 Space information : 33G total Backup information :trigger backup script at 10:00 pm every night and sync the data solution of "primary server" crash :change the backup server's IP to Primary server's IP to take over the file sharing service. user transparent guarantee : rsync daemon to sync primary server data,and switch over to backup server if primary goes down.

6. Problems 1.backup server : hard disk space is too small, 33G total ,all the disk space was used. 2.What happen if primary server goes down now ? (1)the backup server can take over in about 20 minutes, however,data lose will happen (2) Impact: more than 30 users and some critical server will be affected (3 )The workflow which use the freenas as samba disk mapping will be affected hard disk space is too small

8. solution replace the old backup server with a desktop pc with a large disk space .Within 5 years, It will meet the uses request. resources I need to solve it 1.one desktop PC 2.several IP for test 3.a little space in our datacenter 5th floor

9. Thank you