> Unfortunately, the Intel 520 does *not* power protect it's
> on-board volatile cache (unlike the Intel 320/710 SSD).
> Intel has an eye-opening technology brief, describing the
> benefits of "power-loss data protection" at:
> http://www.intel.com/content/www/us/en/solid-state-drives/ssd-320-series-power-loss-data-protection-brief.html
> Intel's brief also clears up a prior controversy of what types of
> data are actually cached, per the brief it's both user and system
> data!

So you're saying that SSDs don't generally flush data to stable medium
when instructed to? So data written before an fsync is not guaranteed
to be seen after a power-down?

If that -- ignoring cache flush requests -- is the whole reason why
SSDs are so fast, I'm glad I haven't got one yet.
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