On Dec 16, 2007 2:12 AM, Tracy R Reed <[EMAIL PROTECTED]> wrote: > Bob La Quey wrote: > > The cost of ZFS + JBOD should be lower than anything > > built on RAID. No hardware RAID controller to buy or > > break. > > I'm still reading about ZFS but doesn't it involve a form of software > RAID integrated with the rest of the storage system? > > > I am also wondering how ZFS fits into the XEN/AoE world > > that Tracy has been exploring. http://xenaoe.org/ > > I'm not sure how it fits as I haven't been able to use it yet and > probably won't be able to until it somehow gets integrated with Linux. > > -- > Tracy R Reed
Well you could try BSD with XEN/AoE :) Or you could experiment with ZFS/FUSE. http://www.wizy.org/wiki/ZFS_on_FUSE The more I read about ZFS the more convinced I become that it is on the right track. Put _all_ of the responsibility for data integrity in the file system where it belongs. Do _not_ spread the problem around in layers of obscure and difficult to maintain (read expensive and easily obsoleted) hardware and software layers. Because ZFS runs on the "main" processor not some peripheral processor on a disk controller it will cause a hit on the "main" processor ... but the advantage of that is the "main" processor is far more likely, because of economies of scale and competition, to be far faster than the cpus used in the disk controller. Disk controllers are less likely than motherboards to contain the latest technology. Once you toss out the RAID hardware you have both a simpler and a less expensive system. Nothing but a bunch of disks. This will almost certainly be more reliable than hardware RAID. ZFS provides _all_ the data integrity needed. At least that is my understanding, BobLQ -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
