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.