Originally Posted by BillBragg Previous SSD TV buffer post.
I think that one covered it pretty well. If you've got a smaller drive (64GB) and older technology NAND and you leave live TV streaming 24/7 then yes, it will wear out in a couple of years or so. With a 128GB or larger drive with newer NAND it will be quite a while before you wear it out. If you stop live TV when you're not watching it, it will be decades.
It is the opposite, the older MLC NAND is built on a 50nm node process has a P/E endurance of 10,000.
The newer 20nm devices have P/E numbers of between 1000 and 1500. The short term fix is to not let the drive fill up, the worst case is being the free space that is just sufficient to accomplish the write, everytime the data is erased and rewritten it will hit the same set of cells again and again.
In the 10Gb example that was discussed, if the 10Gb block is repeatedly written/erased on a drive that has just 10Gb free, it will will wear out the NAND very quickly.
If the live TV buffer has a 500Gb drive all to itself, writing/erasing 10Gb at a time, then each individual NAND cell is only written at 1/50th the rate and the life of the drive is significantly enhanced.
If SSD is an absolute requirement then I suggest the OP consider the use of SLC drive, these have a P/E ratio of 100,000 cycles. If you can find a couple of Intel X-25Es in new or near new condition ( < 1Tb total writes), then 2 or 3 or them in a Raid-0 is quite viable as a live TV buffer.