RobRehnmark wrote:Which checksum is it advisable to use?
fletcher4 is fast and good. That is the default one. The new ones (SHA512, skein, edonr) use quite a bit more cpu. If you are thinking about dedup, skein is a good choice. But without
very special reasons one should not use dedup.
RobRehnmark wrote:Also, can I change checksum algorithm without destroying the pool?
No destry and rebuild is necessary. The change will be applied to NEW data that is stored. Data already on the pool with retain its current checksum, incl the type of checksum.