1. eSATA : Atlas L DVRs have eSATA port.
But,eSATA drive does not show up on 'ARCHIVE' menu.
it only works at storage setup for schedule recording.
And, even you use eSATA with multi HDDs , it sees the first HDD only.
2. USB HDD
USB HDD does not show up on 'ARCHIVE' menu
3. Download from iPIMS or Web interface
Atlas system has about 100 mbit upload bandwidth.
It takes about 24 Hours to download 1TB at 100mbit.
you can download to USB HDD and any other storage that is compatible with your PC.
4. read HDD from Atals
there is software tool available to read Atlas' HDD from PC directly.
but, success rate is only 50%.
the master HDD from one Atlas DVR can be read at another atlas DVR.