Very poor performance from Dell/LSI Logic SAS 3000 series SATA/SAS RAID controller FreeBSD 6.3

[Andrew Snow]

Xin LI wrote:
> I believe that data corruption can happen on every place if writing
> cache is lost, it's not an UFS-specific feature :)

ZFS has the promise of not requirring safe hardware write-caches due to 
its parity data and intent log.

 From my understanding, it can promise that a data block has been 
written completely and safely, and that filesystem metadata is not 
corrupted, but out-of-order writes could still happen.

- Andrew