I'm slowly converting my media library to digital format and have quickly run out of space on my 3TB drive. I plan to continue adding over the years and want some sort of safeguard against catastrophic failure.
I'm trying to understand the various RAID systems. RAID 0 is a no-go but since this isn't mission critical, I think I can live with RAID 1. From what I've read, this means I lose half of the storage capacity, correct? Isn't this true of RAID 5 as well?
For example, the following storage system comes pre-configured as RAID 5. How much actual storage space is there as a result?
http://store.apple.com/ca/product/HE...fs=s%3DpriceHL
I don't care about write performance as once a movie on disk, it will only ever be read.
I'm using the Apple ecosystem but that shouldn't matter for this situation from my understanding. I'm open to cheaper and alternative solutions but would prefer dealing with fewer drives. I did read Dell not recommending RAID 5 on drives larger than 1TB but don't really understand why.
Thanks.