On Thu, Mar 31, 2011 at 12:16 PM, Roman Mamedov <rm@xxxxxxxxxx> wrote: > On Wed, 30 Mar 2011 23:56:26 -0500 > I thought DRBD presents just a regular kernel-level block device in /dev, and > seeing how one can create mdraid out of just any kind of block device, > including those provided by AoE, iSCSI, LVM, dmcrypt or even 'loop', are you > really sure this matters here? The only advantage of RAID5/6 over mirroring is cost savings, certainly not greater fault tolerance taking rebuilding times into account - if you're planning to set up separate whole servers for each component of your redundancy strategy, it seems odd to me you're trying to saving a few bucks on hard drives. DRBD is a well-regarded solution for this application, but it is oriented toward mirroring whole filesystems (usually those of mission-critical servers) that may themselves already be protected locally with RAID. I would advise you follow their standard recommendations at first, don't get too "creative" if you're actually looking for fault-tolerance rather than just experimenting around. All that said, if you're looking for a fun experiment and go ahead, please do document your results and report back here! -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
