HD Surveillance will be required at applications-
1.
Where the requirement of data storage is plenty.
2.
When you require more then 2 USBs for attaching mouse, keyboard and pen drive.
3.
Where you need to add more Hard disk through the eSATA port.
4.
Where there is a need for mirror imaging parallel on various Hard Disks.
5.
Where you need to share data in separate Hard Disk in order to avoid any data
loss.