Taking care of your media will further ensure the safety of your precious images, as heat, humidity and exposure to light all have an effect on life span. It's recommended to keep your storage dry and in a temperate place, away from direct light.
It's A RAID!
Known as RAID (Redundant Array of Independent Disks), this technology allows multiple hard drives to be linked together to create the effect of a single drive. RAID can increase your system's performance and enable automatic backup of your information.
There are a number of levels of RAID. The three most common setups are: RAID 0: Two hard drives process the same data in order to increase performance. RAID 1: Two drives work together; data from one hard drive is automatically backed up to the other. RAID 0/1: Four drives merge RAID 0 and RAID 1 features for increased performance as well as automatic backup.
Check to see if your computer can support RAID before investing in multiple drives.
CD and DVD technology basically work as follows: The discs have a label layer, a protective layer, a reflective layer and, finally, a substrate layer, which is the layer to which a laser beam burns or essentially prints information. The laser is part of your CD or DVD player/burner.
On the substrate layer, there are grooves called data pits, and when the laser hits those pits, the intensity of the beam reflected from the silver reflective layer drops. When the beam moves from a pit to a leveled area, a change in light intensity produces different levels of signals. This translates to data.
DVDs utilize this technology with the same laser as a CD, but at a different wavelength, the result of which is the ability to write smaller and denser bits of information, and subsequently, one reason why they're able to hold more data than a CD.