everyonce Posted December 29, 2014 Share Posted December 29, 2014 The only topics I've seen on this are a little old. It seems to me that it might work to enable Server's Data Deduplication tasks against the raw disk volumes instead of the main drivepool partition? does this sound like it would work? Thanks! -everyonce Quote Link to comment Share on other sites More sharing options...
0 Christopher (Drashna) Posted December 31, 2014 Share Posted December 31, 2014 In theory, it should work, if you use the Deduplication feature on the disks in the pool, and not the Pool drive directly. However, you will need to make one change first to ensure that it works properly: http://wiki.covecube.com/StableBit_DrivePool_2.x_Advanced_Settings Set "CoveFs_BypassNtfsFilters" to "false", and reboot the system. This ensures that the Dedup filter doesn't get bypassed for the disks in the pool. However, depending on your settings, the size of the disk and amount of data on the disk, as well as how often the data gets moved around, you may not see a huge savings. Microsoft estimates that you will only see about 50-60% savings at most for a file server. But in reality, it may be much, much lower for you. Also, deduplicated data is at a higher risk of loss, because if a block on the disk gets damaged, it's much more likely to corrupt/damage multiple files, instead of just the one. If you choose to enable it, I would recommend ONLY putting duplicated data on the disks with data deduplication enabled. Quote Link to comment Share on other sites More sharing options...
0 everyonce Posted December 31, 2014 Author Share Posted December 31, 2014 Great answer, thanks! I'll probably leave it alone since the biggest benefit of dedupe is using across the entire pool, and it makes sense that that wouldn't work against the actual pool drive in this case. Thanks again! Quote Link to comment Share on other sites More sharing options...
0 Christopher (Drashna) Posted January 2, 2015 Share Posted January 2, 2015 You are very welcome. And yeah, you're not going to see the most optimal savings while using StableBit DrivePool, because we do spread out the files between the disks. And as I said, "general file storage" may not see the most optimal savings anyways, as there isn't as high a chance of duplicate data, as opposed to VHD/VM storage (which I suspect the Microsoft Deduplication feature was designed for specifically). Quote Link to comment Share on other sites More sharing options...
0 Michael Isaacs Posted July 11, 2016 Share Posted July 11, 2016 I am receiving up to 70% savings from Deduplication myself, while utilizing DrivePool technology across multiple drives on Win 2012 R2: 3 Drives in pool H: is the DrivePool drive FreeSpace SavedSpace OptimizedFiles InPolicyFiles Volume --------- ---------- -------------- ------------- ------ 1.43 TB 4.79 TB 616928 616931 M: 1.48 TB 4.59 TB 592774 592773 O: 1.18 TB 2.25 TB 362248 362246 N: 4.1 TB 0 B 0 0 H: PS C:\Windows\system32> Get-DedupVolume Enabled UsageType SavedSpace SavingsRate Volume ------- --------- ---------- ----------- ------ True Default 4.79 TB 68 % M: True Default 4.59 TB 67 % O: True Default 2.25 TB 47 % N: True Default 0 B 0 % H: Christopher (Drashna) 1 Quote Link to comment Share on other sites More sharing options...
0 Christopher (Drashna) Posted July 13, 2016 Share Posted July 13, 2016 That's a really good amount of savings. And it falls about in line with Microsoft's estimates. Though, that always depends on WHAT you're storing. Quote Link to comment Share on other sites More sharing options...
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everyonce
The only topics I've seen on this are a little old. It seems to me that it might work to enable Server's Data Deduplication tasks against the raw disk volumes instead of the main drivepool partition? does this sound like it would work?
Thanks!
-everyonce
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