In this thread I've got most valuable tips regarding the home RAID solution options as well as their pros and cons:
I've figured out for myself a few important points (the question will follow):
Software RAID (in mirroring mode) would serve better then hardware RAID, so that a controller will never go away and I will be able to empower hard drives from different vendors.
Since RAID is not backup, I will be able to afford another hard drive for a backup (as almost a bulletproof solution, geographical backup might be applied at any stage via proper service providers).
So, considering I will have one (simple) computer that will be solely dedicated to the issues above (and maybe some FTP etc, but that's a very side issue to me), here are my questions:
Any kind of preferred motherboard vendors please? (I know that the answers might be very subjective)
Any specific HD vendors that are considered more reliable that the others please? (subjective answers are welcomed as well, still there might be guidelines such as 5400 rpm disks are generally more reliable then 7200 etc).
Any kind of preferred software RAID (OS/Linux flavor) or there is only one driver for Linux distributions that makes all the job? The software solution might be freeware as well as commercial software (as long as the price is affordable).
Any kind of preferred software Backup (cron job - will it be enough?) as well as incremental backup (very optional, still worth to consider). Again, free/commercial software recommendations will be welcomed.
(and most important question): any objections or significant drawbacks to the solution I've came up with? Any other related tips that worth to know, please?