Bryan J. Smith wrote: >>easier, > > > Actually, I very much disagree with that assertion. What's easier > than leaving everything -- build to failover to rebuild than to the > on-board, intelligent ASIC? GPL drivers in the stock kernel since > 2.2.15 (yes, that's _2.2_). > > I'm not making this up, I have _numerous_ 3Ware Escalade 7000 series > cards that I have been deployed since Red Hat Linux 6.x / kernel 2.2.x > and have been upgraded through kernel 2.6 and I have changed _zilch_ > except for maybe 1-2 firmware upgrades. Dealing with LVM and MD changes > over the same period have been far more difficult. what happends if the 3ware card get wrong? do you always have a backup raid controller (with the same type)? with software raid you can plug it to any kind of controller and save your data! >>safer. > > > Again, totally disagree with that assertion. I'd rather leave RAID > to a fairly static and proven firmware and driver in an intelligent, > massively queuing design, which makes the OS/software merely a dumb > block device that is hard to "screw up." ;-> > > Not to trample on your issues and kick you when you are down, but didn't > you just have a problem? ;-> > > The _only_ RAID-5 issue I have _ever_ had with 3Ware was when they > added it to the Escalade 6000 series. 3Ware quickly realized there > was a design consideration in the 6000 that took issue with the RAID-5 > algorithm, which prompted the 7000 series design (which is also used in > the 8000 and 9000 too). at the first place we start to use 3ware's raid5 when it's crashes at the first week and we got a mail from 3ware that it's a known issue with the current firmware. that was enough! >>we always use the latest:-) > > > Just wondering why you're buying 3Ware cards when you're not using the > hardware ASIC at all. how you can plug 1.5TB into machine? and the only good kernel support is for 3ware (at least 2-3 years ago). that simple. -- Levente "Si vis pacem para bellum!"