less-used cell areas.
Because of these properties and odd
buffering policies, many application use
cases simply don’t get any performance
benefit from writing to Flash. Flash
manufacturers know this—in fact,
Flash is marketed as an SSD (a solid-state “drive”) telling you that it is not
competing with RAM.
But this is not a bash-Flash article;
I’d be just as happy with Flash-based
gigabytes of persistence, as long as it
is RAM-fast and reliable. Whether the
future is Flash or MR-RAM, STT-RAM,
PC-RAM, PM-RAM, R-RAM or any of
the other possibilities—Nanotube-
RAM, SONOS, Racetrack memory and
so on—the key feature is memory that
is uniformly ultra-low-latency reads and
writes, random-access, high-bandwidth,
long-term persistent and capable of
large-scale, cheap production.
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