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Umfriend

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Everything posted by Umfriend

  1. Within Scanner you can do: Settings -> Scanner Settings -> Open Advanced settings and troubleshooting -> Advanced Settings -> Scanner - ScanMaximumConcurrent and set to a high(er) number. I think that would allow you to scan many disks at the same time. Having said that, I set Scanner to scan every 14 days and have ensured that the drives are all scanned at different days. Other than for a quick first scan, I would prefer scanning my collection to be distributed over time.
  2. So in DP, there are a number of balancers. One of them, by default, is Stablebit Scanner. If you de-activate that one then DP will not migrate (you can also set parameters within that balancer to determine what kind of things would cause an evacuation). Having said that, if the number of unstable sectors increases then I would want to make sure I had enough space to replace. I would be comfortable with 2 sectors but force Scanner to re-scan and if that number increases then, yeah, probably a good idea to at least add a disk. Whether this disk needs to be taken out depends on preferences, duplication and backup situation. BTW, the evacuation will never itself cause data-loss. If there is not enough space to move then either nothing will be moved or as much as possible basically.
  3. I wouldn't know what it the best option. Given how comfortable I am with DP, I would have done it the same as you (I realise I proposed another scenario in my previous post but that would have been my way to go *if* I minded SnapRaid having to work for 12 hrs).
  4. I do not have SnapRaid but from what I have read, I think I would have done it as follows (I am assuming that DP is set not to rebalance because that might cause a lot of files being from other drives even to the new 12TB drive): 1. Add net drive to Pool; 2. Stop DrivePool Service; 3. Robocopy from the old drive everything *within* the hidden PoolPart.* folder to the hidden PoolPart.* folder on the new drive; 4. Either delete from the old drive or physically disconnect/remove it; 5. Change Snapraid config file; 6. Restart DrivePool Service (or reboot pc); 7. Remove old drive from Pool (through DP GUI). Or somesuch.
  5. Well, it does indeed need such a list. But rather then keeping its own list, it uses the standard NTFS database on the underlying drives. Now I am not the developer but my guess is that whenever DP balances, it DP simply queries the underlying Drives for the data on the files. Edit: Also, keeping a seperate database up-to-date may actually be quite burdensom as a user may alter files in the Pool without going through DP by operating on the underlying drives.
  6. No, DP does not know which files are on a lost/disconnected/removed drive. For that it would have to maintain some sort of database which, to my mind, goes against the idea of a lean and "simple' app. Having said that, there is the DPCMD command line app that does create a list of all files in the Pool. However, that is a snapshot only.
  7. I think you can. Just be sure you stop the drivepool service prior to doing this (and I am not even sure this is necessary, but I would) and restart service (or reboot) after you finish. Assuming Disk Management does not screw up, the data should be safe in any case because everything is stored in plain NTFS format. Of course, a backup never hurts. An alternative is the free version of EaseUS Partition Manager..
  8. Not sure how the transferspeed would be higher and if you were to copy files to the Pool then, by default, DP would write to the drive with most free space available...
  9. In principle, yes. Not sure how to guarantee that they will stay there due to rebalancing, unless you use file placement rules.
  10. No, you only need a license on Server and then allow PC and laptop to access a share that points to the virtual disk DP makes for you. On Android, no clue.
  11. You could use Hierarchical Pools. Say you have disks A, B internal and C is the external one. You can then: 1. Create a Pool Q consisting of A and B, no duplication 2. Create a Pool R consisting of C, no duplication (*) 3. Create a Pool P consisting of Pools Q and R, x2 duplication. However, I don't think there is a good way to deal with temporarily removing drives. AFAIK, if you then (physically) remove/disconnect drive C, DP will put Pool P in read-only mode. May be what you are looking for but I'm not sure that will always work out well. Moreover, is that a USB connected drive? AFAIK, using USB-connected drives is not considered best practice and IIRC, it has led to problems, including data loss, due to connections over USB sometimes dropping for a bit (which I think is still within spec for USB). (*) you could also create Pool P with Q and C, so without the intermediary step of Pool R but I think it makes it a bit harder to manage when removing/adding.replacing drives.
  12. I think https://stablebit.com/Contact
  13. Then perhaps you need to follow Terry's instructions on the other underlying drives first.
  14. Actually, I think you are right. Once DP has worked-out which files should go where (I think that happens when DP status bar says "building bucketlist"), it should at that point be easy to see if there is space enough. I would still want DP to go ahead, because it has to happen anyway, but perhaps send out a mail or somesuch indicating that more space is needed. Then again, it is coding for something that is, I think, rarely an issue. Once you need to replace a drive, insert on of at least equals size. That is, I think, by default what most would do anyway. I run DP one a WSE2016 server BTW.
  15. Yes. I think there is a stting in DP to try to recognise the Pools after Bitlocker has been started or somesuch.
  16. Actually, once a drive is lost, it would take quite some time to determine how much would be needed to re-establish the required duplication. DP would not have been aware or remember what was stored on the lost drive. The first step is called re-measuring (try it). And yes, as a result of that, DP might be able to give a recommendation on how much, if any, additional storage is needed. But practically, if you know the size of the lost drive, then all you need to know is: how much data was on it and how much do you have available now. Your math does not work out BTW. After the failed drive, you have 4TB of duplicated data (using 8TB) and 4TB of unduplicated data and you would need a 4TB drive.
  17. Umfriend

    DIsk duplication

    If you want to replace, the best way, IMHO, is to: 1. Add a new drive to the machine and Pool 2. Remove the faulty drive through the GUI of DP 3. Let DP do its magic (may take a while) 4. Remove the faulty drive from machine.
  18. Sorry, I am at loss here. Can you access the backup folders on the underlying drives?
  19. But imagine you are going to write a new file to the pool. How would DP know whether it will have to write two or three duplicates? That is not deterministic. Put otherweise, imagine you have two folders only, one is x2 and the other is x3 duplication and 3TB of (gross / real) space available. What should DP show? 1.0 or 1.5TB free?
  20. There is always this: https://wiki.covecube.com/StableBit_DrivePool_Q5510455
  21. No. If, and only if, the entire Pool had a fixed duplication factor then it *could* be done. E.g., 1TB of free space means you can save 0.5TB of net data with x2 duplication or .33TB with x3 duplication etc. However, as soon as you mix duplication factors, well, it really depends on where thre data lands, doesn't it? So I guess they chose to only show actual free space without taking duplication in mind. Makes sense to me. Personally, I over provision all my Pools (a whopping two in total ;D) such that I can always evacuate the largest HDD. Peace of mind and coninuity rules in my book.
  22. Not entirely but pretty sure DP will not be able to tell whether there is enough space, nor how much will be available afterwards. But yes, if the Pool had over 8TB free prior to the failure of one 8TB drive then there should be enough space available (probably rare exceptions excluded).
  23. I must be missing something obvious. The two 7TB drives, those are G:\ and L:\, no? I am tempted to say you simply have an actual 14TB HDD in your machine You see, with me (and AFAIK others), DP Pools show up in disk management as 2TB HDDs, regardless of their actual size. If in disk management you right click -> Properties -> Hardware, in the list you then get to see, do you see Covecube Virtual Disk as one of the names? If you write a file to F:\, does that file appear on G:\ and\or L:\ somewhere within the hidden poolpart.* folders on G/L? Do they have hidden Poolpart.* folders?
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