Originally Posted by vl1969
what I would like to understand is WHY do we need tRaid or NZFS when BTRFS is out and getting accepted by mainstream distros?
what this 2 file systems can give us that BTRFS does not even today?
Anything I missed ?
so my question stands
Yes, you've missed a lot. Some details of NZFS have not been revealed yet.
As far as how BTRFS compares to Transparent RAID, see bryansj's answer as a major example of what you are missing out.
Originally Posted by dan4081
I think you already posted about how NZFS was going to shake up the media storage world (about 1 year and 3 weeks ago if my math is right), how you were going to stomp out Unraid and
some of the other less fortunate storage options currently in use, blah blah so on and so forth.
Excuse me if I dont get overly excited...
Well, excuse me for taking a breather to create a byproduct that fills a gap till then.
If you aren't following the development of Transparent RAID, then I fully understand your position. It lacks the necessary marketing to inform potential users what they are truly getting. The product is very much underground, which is unfortunate as it trumps everything else in its category.
Plus, I think that many are awaiting the Linux version before converting. For users already on a Linux solution, converting to Windows requires migration rather than a simple switch as promised.
Originally Posted by Mfusick
Would you mind discussing the advantages and disadvantages are it relates to a media server of T vs F ???
I think many would benefit from that. F raid is very popular around here (for good reason) but I am not sure the majority of people understand the differences or advantages and disadvantages of them.
Comparisons were made here: http://www.flexraid.com/2013/10/04/table-comparison-of-transparent-raid-vs-raid-over-file-system/
However, we can summarize things a bit here.
1. Transparent RAID (tRAID) is not a replacement for RAID over File System (RAID-F). As it stands, RAID-F is being redesigned
. So, expect more awesomeness out of it in the near future.
2. RAID-F is far more flexible and hence its greater popularity. Today, the number of users choosing RAID-F is greater than the number of users choosing tRAID even though tRAID is newer and much more polished. On the same token, tRAID is just not well known or understood, and that might have something to do with it.
3. Transparent RAID has one major thing over RAID-F: it is real-time. Though, this can be viewed as a strike depending on how you view things.
For a lot of users, Snapshot RAID works perfect and fits well with the way they use and interact with their data. For other users, however, their usage simply requires a real-time parity solution.
Transparent RAID was created to provide that real-time parity aspect while providing as much of the benefits found in RAID-F as possible.
4. To re-enforce the previous point, if Real-Time RAID over File System (RT RAID) had lived to its promises, Transparent would not have been created. As it stands, RT RAID is still experimental and only works in limited deployment scenarios.
5. Now, the one thing tRAID has over RAID-F is rather big if you require it. Transparent RAID provides Online Disk Expansion, Contraction, and Recovery. The data on the failed disk is reconstructed live - and so, there is less downtime compared to RAID-F. If your data changes continuously, you really don't have an option as Snapshot RAID won't do.
6. Being new, Transparent RAID just much more polished and much more feature rich, but this will change with the already started RAID-F redesign.
So, all in all, it is purely about whether one needs real-time protection or not.
I personally recommend Transparent RAID as it has most the key RAID-F features while providing real-time protection and features. It is also much easier to use and maintain once configured. Still, this recommendation comes from a personal preference and prospective users should evaluate both products to decide which one to choose.