System Recovery

[PriceDavid]

I am doing a degree in Software Engineering and working on a project about system recovery devices. I am looking at devices like.

http://www.juzt-guard.com

and

http://www.radix.co.il.

I'm not trying to reverse engineer these devices just get an idea of how they work. I understand that the hardware is just to initiate the boot from the MBR at start up to load the software BUT HOW DO THESE DEVICES WORK ?

 

[straiph]

not exactly knowing so this is an attempt at an inteligent guess. serveral type of security and recovery systems i have seen

on laptops - the shutdown program saves the entire contents of physical memory to HD before the battery fails. so on restart this file is loaded and OS resumes where it left off.

all of the essential files ie: MBR,kernal,setup info,drivers... to a floppy,zip or cd. therefore it must know alot about the OS in the 1st place. upon system failure the written media is used to boot and restores the former contents of the hard disk. the backup needs to be upto date.

mirror servers (1 being master) take the same messages but only the master outputs. if the master was to fail the slave instantly takes over with minimal loss. ofcorse the engineers need to get the original master (now slave) online asap before another failure occurs.

hope this is some help.

"There are 10 types of people in this world, those who know binary and those who don't!"