I finally bought a 1TB external hard disk for my iMac.  Now I can take advantage of Apple’s Time Machine feature, were auto-backups are scheduled every hour.  The hard disk retails for 195 bucks but the guy from JB Hi Fi gave me a 5 dollar off.  Hee. The hard disks with lower capacity were on sale but I was really eyeing the 1TB.  I hope to finish my photo and video back-ups soon.