Originally posted by Ron Boggs Hey Ben, you mention that flash memory has a lower read/write cycle lifespan than hard drives, but what about longevity? I don't forsee using archival "vaults" for very many read/write cycles at all. Probably less than 100 for total lifespan, so the cycle life is not important to me. Will the data stay there for decades? Will it be retrievable for decades? Those are the big questions for my uses...especially as the flash memory keeps getting cheaper and cheaper...
And Confused, I wasn't trying to shout down your recommendation of DVD storage...hell, I use DVD's myself and they are without question the least costly option at present. I was just making sure others new to this topic don't presume full archivability with DVD's.
Wouldn't it be funny if the conclusion to this question is something akin to "film archives better than electronic/optical media." Just as a freakish irony...
Still haven't heard back from my "tech whiz" boys regarding the external drive...that's not a good sign! Part of their business model is quick turn-around...uh oh.
I have no data about the lifespan of data on SSDs - and as far as I know, none have been published. But this is a vast field and I may simply have overlooked something.
As with all media, the lifespan will depend on storage conditions, too and SSDs are also (loke HDs) corrupted by excessive force (a fall down off the table...) I faintly remember a technical discussion some years ago, when SSD was still more a concept, than a product, where one opinion was, that SSDs would need refresh cycles every now and then, to prevent slow data loss. I do not know, whether this is indeed necessary with the current generation of SSDs.
The main problem I guess, will be whether you still have the hardware and software to really access the SSDs and data in a couple of decades. Therefor we all need to copy the existing data every couple of year to newer storage media and make sure, there is still software around to read file formats.
Film is indeed the only storage medium for images, where we actually have the experience of long-term storage.*If done properly, film will last four hundreds of years, especially BW.
Ben