Hi,

in the documentation and here in the forum I could - of course - find the strong advice never to use a RAID controller with write cache enabled and without a BBU. That's obvious.

I could also find out that DSS uses "a few MB" of RAM for caching in block IO mode, and all available memory for read and write caching in file IO mode.

Does this mean that an unclean shutdown of a DSS server could result in really serious data loss, even if I use a BBU for the RAID controller?