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DP with Flexraid RaidF- Comments
I see that some folks here are using flex raid with DB, how is this working out, what pitfalls should new users look out for? I assume your adding each individual drive as a separate DRU, Is there a limit to the number of drives that you have offloading to a single PPU? Is this over complicating your DP/WHS installation? I've seen a lot of posts about how stable Flexraid is, but folks seem to lump the discussion of both RaidF and pooling app into just flexraid, which from what I can tell are two completely separate applications, but there are benefits when used together, like real-time raid.
If you troll the Flex raid forum, there is a lot of activity, and what appears to be a lot of issues, so I'm not so convinced of it's reliability, but I'm really intrigued by the concept. I have 4X2TB drives in my Pool, plus 1 X 1tb for my recorded TV Archive folder, and if can obtain can obtain a single 2-3TB drive for parity (PPU), to protect against a single HDD (DRU) failure , it's very interesting. I'll keep a complete backup of my irreplaceable data, but it's getting costly maintaining backups for replaceable data like Music and movies, while it would be a pain to go through all the disks, I have the original media. so why waste all that space with complete duplicates. knock on wood, but I would hope not to have two HDD failures at the same time.
Just sparking some conversation, I have some down time and looking for a new project. lol.
replacing a failed drive does add some complication, sounds easy, but I'll need
to write out all the steps, this one seems easy to over look.
Are you saying with the beta, you can tell the pool which drives to use for
certain shares, or even assign files of a certain size to specific
drives, while assigning larger files to other drives?
Question, using snap shot raid, and running parity nightly, I read some where,
that even if one file changes/added/deleted in a dru you get data
corruption errors if you need to restore a drive assuming the drive
fails before the next parity schedule parity check. Is this correct? seems to me you would have an issue with just that file, but the rest should be intact.
Thanks for the replies.
I have never had to recover in my current setup, so Hopester advise is interesting. I would have approached it differently..using the method of Shane described here. Then insert the new disk and preform the restore via Flex and then restarted DP services to see if it picks up the drive. I would recommend doing the NTFS folder route because if you come to a point where you either run out of letters or that you find it to cluttered and want to change, you will be forced to redo your flex snapshot configuration from scratch since Flex will not like the change from one mode to the other.(Thats what i had to do). The only reason to have letters for the disk in your pool is if you have programs that use the disk beside the DP that require drive letters(which shouldnt be the case).
From what I can tell, changing my current drives to NTFS folders will require that I create new partitions, right? Do you just name the folders something like Drive 1, 2, 3, etc? what's a good naming convention?
Remember, you can direct FlexRAID to restore a DRU to another destination if you wish, such as a "reserved" empty share you have for this purpose or even a drive outside the pool. If a share in the pool, then "move" the folders there to your proper shares, which will not really physically move anything, just update links to those folders/files. Or just restore to \\Shares and let DP place the files back on the drives in your pool.
I run FlexRAID on my WHS V1 system. I have never had to do a restore, but this is how I would basically manage a drive failure. I use a combination of folder duplication for some shares (photos) and snapshot raid for my other shares with each drive as a DRU + 1 PPU. 9 Drives total, 18TB
I am planning to move to WHS 2011 this week and will be utilizing Stablebit DP for pooling and folder duplication along with FlexRAID as you guys are.
Thanks for all the great information on your experiences with this setup.
Thanks for your help. I know some of the questions are on the FR site, so thanks for getting back to me.
I was looking at documentation to set up my first parity drive and I think I'm a bit confused. it looks like the guide located here would be what I want since I don't plan on using FR for pooling: http://wiki.flexraid.com/2011/08/29/setting-up-your-snapshot-raid/
The other write up goes through setting up a pool and then doing your raid. The question I have is about where I set up DRUs and PPUs. Since I'm not using FR for pooling does that mean no DRUs? Or is that where I put the amount of discs I am using in my DP pool? And then possibly extra since I plan on adding more drives at a later date. I'm guessing all of that can be changed later though.
This sounds great, but I will need to keep on reading to see what I need to do. I browsed for you of your screenshots, but only came up with the one from this topic and I didn't notice the FR interface in it.
OK, Drive mounted in Disk Management. I have not taken the exisiting drives and mapped them to NTFS folders yet. Does it matter that I have data on those folders? Does it mess up the drivepool I've set up? Just some questions I hope you can help me with.
I'm sure this is probably a dumb question, but when I add my existing drives (currently used by the drivepool) and map them to NTFS drives how does that affect the existing drivepool? Will my drivepool still be the current drive? I'm just curious as I probably wouldn't lose anything, but just want to make sure the existing drivepool remains intact and the current drive retains the existing drive location of J.
Or would it just be easier for me to just use the current drives I'm using as DRU's in Flexraid? Is it just a matter of not running out of drive names? If so, I couldn't do that in my current set up anyway!
And I think I can add drives to the DRU and PPU right?
can you clarify your instructions here for me please?
I've got drivepool on my WHS 2011 n40l with four 4tb drives inside. The OS is on a sperate 250gb drive.