I have an external hard drive with the photos on that but all hard drives can fail and therefore I also have a CD backup.
I use Nero but its up to you what you use. I burn some photos onto a disk and make sure its set to multisession so I can keep adding until the disk is full. I also keep 2 copies as photos are irreplaceable and I check both copies every couple of months to make sure that they are still readable. Its never happened but if one did fail I would immediatly make a second copy from the backup. This way there is almost no chance you will lose everything.
Also keep them in proper case with a cover and keep them out of direct sunlight and away from heat.
This may seem rather extreme to you but burning 2 copies of the photos only takes minutes and checking the disks every couple of months also only takes a couple of minutes. And they are irreplaceable. You could use DVDs if you wish but a typical photo is only about 2 - 4 mb and a CDR will take 700mb I think it is so you can get about 300 photos on one disk, maybe more. Also do not use DVDRW or CDRW for long term storage of photos etc. They corrupt rapidly compared to the normal DVDR and CDR and you will lose your photos.
I use Acronis as well but thats for a full backup of everything windows - the lot. I also have my photo disks which are completely seperate which is what you asked about. Depending on the video sizes you meant be better using a DVD for them but the same thing - make 2 copies. Give some to relatives if you wish that way someone will always have one perfect copy.
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