Hi,
AFAIk SD cards (and SATA DOMs) do not have any kind of wear-leveling
support. Even if the crappy write endurance of these storage systems
would be enough to operate a server for several years on average, you
will always have some hot spots with higher than usual write activity.
This is the case for filesystem journals (xfs, ext4, almost all modern
filesystems). Been there, done that, had two storage systems failing due
to SD wear....
The only sane setup for SD cards amd DOMs are flash aware filesystems
like f2fs. Unfortunately most linux distributions do not support these
in their standard installers.
Short answer: no, do not use SD cards.
Regards,
Burkhard
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