OpenZFS on OS X

Posted: **Tue Jul 19, 2016 5:51 am**

I've looked around but haven't found any good answers..

Which checksum is it advisable to use?
I'm running a 4.1GHz hexacore hackintosh with a Raidz2 of 6x 3TB Seagate Barracuda on SATA2.

Also, can I change checksum algorithm without destroying the pool?

Posted: **Tue Jul 19, 2016 10:52 am**

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.

Posted: **Sat Jul 23, 2016 5:33 am**

When reading that new algorithms are a lot faster than SHA256 I assumed that the latter was the default.
So I got curious about a speed increase.
Are there some benchmarks on the all the algorithms?

OpenZFS on OS X

Which checksum algorithm to use? Changed without destroying?

Which checksum algorithm to use? Changed without destroying?

Re: Which checksum algorithm to use? Changed without destroy

Re: Which checksum algorithm to use? Changed without destroy