Hi, On Mon, 2 Nov 2009 21:35:45 -0400 Ted Unangst <ted.unan...@gmail.com> wrote:
> softraid offers a few advantages. > > 1. Better crypto. The crypto algorithm currently used by softraid is > designed a little better. It could, in theory, also use hardware, > except the choice of algorithm actually prevents that. doh. At the > very least, if you decided you needed hardware acceleration, a small > change to the code would enable it, whereas with svnd it's a pretty > major change. > > 2. Efficiency. The filesystem in a filesystem incurs more overhead. > There's also the fact that svnd goes through the crazy parts of the > buffer layer more than you probably want to. Not a big deal, you > probably don't notice it much. > > 3. Administration. softraid is still under development, and the > tools and support for it will continue to improve. In particular, > without making promises, softraid autodiscovery is a possibility and > will likely work better than anything you cook up with vnconfig. > > The only advantage I can think of for svnd is that it's stabler code > and won't be changing in the future, but that's exactly what makes > softraid better. Today, they are about equal, but softraid support is > going to get better, svnd will not. I have one advantage to mention: I have done some comparison measurements (with bonnie benchmark) and some self-written dd scripts under 4.5 - result: in my setup svnd seems to be much faster. I think this is maybe related to the 1. point because (better) crypto is slow(er). Regards, Joerg
