On Tue, Nov 29, 2011 at 2:34 PM, Mark Knecht <[email protected]> wrote: > On Tue, Nov 29, 2011 at 11:02 AM, Jarry <[email protected]> wrote: >> On 29-Nov-11 17:53, Michael Mol wrote: >>>> 1) First lesson - not all hard drives make good RAID hard drives. >>> What makes a good RAID unit, and what makes a terrible RAID unit? >> Some hard-drives are not suitable for raid at all. There >> are many reasons for that, one example is error-recovery. >> Check wiki for more info: >> >> http://en.wikipedia.org/wiki/Time-Limited_Error_Recovery >> >> In the first place, I would not recommend those "eco" and >> "green" versions for raid at all. They have some saving >> mechanisms which tend to activate at wrong time and cause >> problems for raid-controllers (be it SW or HW). I'd say >> it is worth to pay a few bucks more for enterprise-class >> 24/7 (or special "raid-edition") drives. >> >> Jarry > > This is a good representation of what happened on my first pass with > RAID. I bought a bunch of WD 1TB Green drives. They work fine, but > when I put them together in even a RAID1they had very long wait times > in 'top' and the speed was horrible. > > That's not to say all Green drives do this because they don't. It's > just hard to say what will work before you buy the drives _unless_ you > buy RAID edition drives. > > In Micheal's case he already has his drives so the will either work or > they won't. That's one reason I suggested he put together a couple of > configurations. He's looking at RAID5 & RAID10, which to me makes > sense with 4 drives. We'll just have to wait and see how they work I > think.
In this system, I have five Seagate Barracude ES drives. http://personal.rosettacode.org/smart.txt Which reminds me, I need to fix the tz settings on that box. -- :wq
