IBM today announced that, for the first time, scientists at its
research arm have demonstrated that a relatively new
memory technology,
known as phase-change memory (PCM), can reliably store multiple data
bits per cell over extended periods of time.

The benefits of such a memory technology would allow computers and
servers to boot instantaneously – much faster than what even the
fastest SSD today can
do. IBM believes that PCM can write and retrieve data 100 times faster
than flash while also not losing data when the power is turned off.

Unlike flash, PCM is also very durable and can endure at least 10
million write cycles, compared to current enterprise-class flash at
30,000 cycles or consumer-class
flash at 3,000 cycles.  While 3,000 cycles will out live many consumer
devices, 30,000 cycles are orders of magnitude too low to be suitable
for enterprise
applications.

"As organizations and consumers increasingly embrace cloud-computing
models and services, whereby most of the data is stored and processed
in the cloud,
ever more powerful and efficient, yet affordable storage technologies
are needed," states Dr. Haris Pozidis, Manager of Memory and Probe
Technologies at
IBM Research – Zurich.  "By demonstrating a multi-bit phase-change
memory technology which achieves for the first time reliability levels
akin to those
required for enterprise applications, we made a big step towards
enabling practical memory devices based on multi-bit PCM."

It's big step, for sure, but don't expect flash-based storage to
suddenly get replaced by PCM. That SSD RAID configuration that you've
been lusting after
for your ultimate rig will still be the fastest storage solution for a
good while.


http://www.tomshardware.com/news/ibm-phase-change-memory-flash,13034.html

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