Re: hardware raid solutions?

David Abrahams wrote:

Ready to be depressed about raid five?

thanks bud. I don't have time to be depressed. ;-) you've seen that list of things I want to get done in the open-source world. What I need are slaves, coding slaves so I can focus on my plans to change the publishing world....


http://blogs.sun.com/roller/page/bonwick?entry=raid_z

actually, I did know about most of these failures and that's why I've been talking about isolated hardware controller with its own power supply for both controller and disk. If the isolated controller detects the host going away, then it can write out all of the different bits of data necessary to keep the raid five intact. But as the article points out, this is a moderately expensive proposition.



Despite http://arstechnica.com/news.ars/post/20051117-5595.html, I
don't think ZFS is available for linux :(

But if you can wait a few months...

http://zfs-on-fuse.blogspot.com/2006/05/announcing-zfs-on-fuselinux.html

I just read up about that and baby oh baby, does that looks sweet. if I'm seeing what I think I'm seeing, it is a good chance we can eliminate mdX and maybe, just maybe eliminate LVM.

I may just take a bunch of crappy discs from the basement and a Pentium II I have lying around and test this puppy with some sort of exercising tool.

the big question would be how to partition an existing system so that you could boot, get the right configuration files and then start working. It will definitely take some planning.

--- eric


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