Originally Posted by DavidT99
In your scenario 10x 3tb HDDS all full that's 15tb of data with duplication, Flexraid can protect you against a single drive failure with one 3tb parity drive so you would only need 5x 3tb data HDD's and 1x 3tb parity HDD. You've saved the cost of 4x 3tb HDD's with Flexraid. If you want to protect yourself against 2x HDD failures then add a second 3tb parity drive but how often will 40% of your HDD's fail at the same time.
Again, as I said, I really don't care about duplication. I can duplicate data that really matters, but if I lost every one of my video files (except for my self-made ones, which are backed up elsewhere) I'd still have all the originals. But I do grasp the idea of time consumption, which is why I really looked into this. This is why I strongly considered FlexRaid.. until their website went down for about two days when I was in the middle of needing to move off of my old solution. Now, over this weekend, I'll build the 40TB pool, and I'll probably use FlexRAID to do it. It seems a feasible way to get at it and address my issues.
In the end, to me the biggest advantage of any balanced pool solution was: lose the drive, you don't lose all data, you still have all the other drives; lose the motherboard or box, it's all readable on another PC. That to me is the HUGE benefit that say, FlexRAID appears to have that was a big concern for me; coming from a long past with several RAID based controller RAID5 solutions that I'd suffer a card failure or a board failure and all data everywhere on good drives was basically toast, that was a big, huge concern that years ago caused me to really prefer the WHS pooling/balancing method.. sure, you could lose some data, but your chances of losing all were low, and again, like I said.. i still have the originals.
The arguments are pretty compelling, and I get the benefit, which is why I'm reading into it.
In regards to "discs could go bad".. there may be instances of DVD rot, though rare, and nothing like the old days of Laserdisc rot. I'm really not very concerned for my blurays, which are all nicely stored in containers and locked away. I guess if the house caught fire, but again, if that was the case, no level of raid would save me then.