I need to create as backup a photo archive of several thousand photos.
Could write to CDs though that takes up a lot of CDs at 700MB per CD.
But has the advantage of not putting too many eggs in one basket.
Could write to DVDs though I would have to buy a DVD Writer.
Advantage of reduced storage volume, compared with CDs but if any DVD becomes unreadable for some reason, then that is about 4 GB worth of photos not backed up or accessible.
And there is the choice of simply copying photos to CD or DVD or reducing the volume by forming .dmg disk images.
Is using .dmg any less reliable, when compared with straight copying?
It seems to involve more links in the chain, to compress and then later expand the files.
Though it clearly reduces the storage bulk.
What do others do?