SDHC is sooo cheap now that i am keeping my recordings on the original SDHC card. you can get 32g cards for $7. with 32g you can put many shows on one card. i used to back up (and still do) on many non solid state internal sata drives, but i now think the sdhc card might be more reliable. any thoughts?
To my knowledge, SDHC has not proven itself to be classified as an archival media. If you Google
SD cards as long term storage you will see many opinions but only little factual evidence.
One thing is for certain, the least expensive products rarely holds the best archival properties. Paying for the "best" is not a guarantee of longevity either, unfortunately. (I paid good money for what was supposed to be quality MiniDisc media, only to find 10% unreadable 10 years later).
I am afraid that I can't think of anything replacing a healthy backup strategy.