You both make good points, but it comes out to be more of a hassle to restore and more expensive than if I just buy a second hard drive up front to swap and store at work.
Let’s say that I buy a 4TB HGST external drive (which is said to be one of the more reliable ones out there) for around $160. And let’s assume they only last their warrantied life of two years.
I need two for both of my computers so: $160 x 4 = $640.
[ul]
[li]Pros: Instant significant or full restore.[/li][li]Cons: Weekly inconvenience of swapping of drives with off site copy. Back up only goes back a maximum of two weeks. Incremental back ups are on a daily basis rather than continuous like Crashplan.[/li][/ul]
If I do Crashplan, I still need two drives for my local backups: $160 x 2 = $320.
Plus $150 per year for the family plan (I could save $50 by setting up two accounts, but Crashplan is supposed to be convenient, right?): $150 x 2 = 300.
$320 + 300 = $620.
[ul]
[li]Pros: More convenient to back up. Every file version saved with continuous back up as files change. Slightly cheaper in two year time frame.[/li][li]Cons: Much less convenient to do a significant restore, unless I want to tack on an additional $300 (~50%!) to have up to 3.5TB of my data shipped to me on a drive I have to return and might take several weeks to arrive.[/li][/ul]
Of course, if the drives last longer than 2 years, the cost advantage goes to the four hard drive option, getting more significant with each year that goes by. Past drives have lasted me at least four years, which means $640 vs. $920+maybe $300 for one catastrophic failure.
Even if I have to replace all drives after four years, an eight year cost looks like this*:
Multiple hard drives
($640 + 640) = $1280
Total: $1280
Hard drive/Crashplan
($320 + 320) = $640 for drives
($600 + $600) = $1200 annually for Crashplan
Total: $1840+maybe $300 for one catastrophic failure
For me, an easier, quicker restore and less expense in the long run trump the inconvenience of swapping drives. But we’ll see how I feel after a year of trying it. Or once my kids get a computer of their own.
Thanks for the feedback everyone. Feel free to add more if I’ve still got it wrong. :)
*Assuming 4TB HDD prices don’t drop (unlikely in that time frame) or I decide to buy larger drives for around the same cost.