Now I am trying to understand this:
"They say it's good for 10,000 hours of 1920x1080 at 26Mbps to one device."
10,000 hours is 416 days. So that means 416 days of recording? Essentially impossible with 64GB. So do they mean the card will die / burn out / have problems after a little more than a year?
Also, Ari, where did you get the 26Mbps? I am struggling to find it on those links.
I think this calls for a test! While I have never made use of edge storage using SD cards I have spoken to folks that have... and I have yet to hear any positive experiences. I would be eager to use it if there was a bit more positive feedback. Perhaps this is the product that makes edge storage a bit more reliable.
Thinking long term 10,000 stand-up hours doesn't seem like much if that's the same as MTBF. Conventional platter hard drives rate their MTBF in millions of (greatly inflated) hours.
I have experience using the SanDisk Extreme and SanDisk Ultra cards for edge storage. A general rule would be to use at least a Class 10 card. The higher speed on the class 10's worked really well...however, only SanDisk cards worked.
There were many issues with other makers cards (Kingston, etc) using the same class 10 media. It was unclear what the differences were between them, but the Kingston cards had a ton of read/write errors and didn't work well for things like exacq edge server.
As noted the card 'lifespan' is generally calculated in terms of full read/writes. Therefore it stands to reason why the larger capacity cards naturally have a longer life span rating. Larger capacity = longer time to reach full overwrite = better longevity.
However, as John mentions, there simply aren't enough data points in the market today for multi-year longevity testing.