On 16/01/2015 1:51 PM, Toby Corkindale wrote:
You know, what you said doesn't really make sense. You acknowledge that SSDs offer significant benefits to your workload, and you seem to acknowledge that SSDs are actually completely fine for durability of your workload.. So why are you still saying you wouldn't use one?
Well ..... yes SSD are very good, but given what I've seen with TB, I believe it would still be a premature end of life -- still it might be good for quite a while.
Why are you not worried about your spinning rust drives wearing out? After all, those bearings and motors won't last forever, and all those rapid head seeks to deal with random i/o must put increased wear and tear on them.
The spinning rust, so to speak, doesn't have write limitations that today's SSD units do. A /better/ class of SSDs will (if they come to market) self heal the oxide layer that is damaged from regular writing. That technology does super heating of the oxide layer to restore it back in to near new condition [1] -- at least that's my rough understanding of the tech involved. If we get those drives, then it might be a case of replacing them for greater capacity and/or even faster speeds as it sounds like they'll last forever. Looks like "racetrack" [2] memory isn't going to happen, but this Crossbar RRAM tech [3] is not so far away. Besides spinning disks still have far greater capacity today and with 8TB drives on the market now and 20TB ones coming later.... [1] http://www.extremetech.com/computing/142096-self-healing-self-heating-flash-... [2] http://en.wikipedia.org/wiki/Racetrack_memory [3] http://www.pcmag.com/article2/0,2817,2422734,00.asp Cheers A.