I've been reading all the great threads on storage and backup strategies, but I'm not overly computer savvy when it comes to peripherals so just looking for some guidance on my particular situation. My current setup is the following: 2011 iMac - 1 TB HDD Seagate GoFlex 1.5 TB External HD (Time Machine Backup for iMac) 2012 MacBook Air - 128 GB SSD Seagate 250 GB External HDD (Time Machine Backup for MacBook Air) Backblaze Online Backup for both iMac and MacBook Air My current issue is my iMac HDD is at 80% capacity. The contributors are: iTunes music library (~60 GB music, ~80 GB movies), Aperture photo library (~80 GB), iMovie files (~250 GB), and other stuff (Logic files, etc). All of these will continue to grow over time and I expect to be out of HD space on the iMac in maybe another year or so. I've been looking at various options mentioned on this forum and have been considering a few different solutions: 1) a WD My Book Duo 4 TB (or something similar) to use one drive for storage and the other for backup or 2) an external drive for storage with NAS or TC for backup (could also backup Macbook Air too) or 3) just two external drives - a 2 TB for storage and a 3 TB to backup the other drive and the internal drive. I'm thinking the last option might not be the most elegant, bit maybe would be simplest and cheapest. I could then leave the internal drive for just projects I'm working on at the moment then move them to the external drive when completed. I'd also just continue using a separate backup drive for the Macbok Air. I like the idea of a wireless backup solution so I don't have to think about connecting the MBA every week or so, but I'm concerned about the reliability of TC and the complexity/cost of a NAS. Desk space isn't an issue. I guess I'm just looking for opinions from other iMac users who have storage issues to get their opinions on this and to see what worked for them. Thanks for reading.