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Saphir

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  1. Like
    Saphir got a reaction from Shane in Best practice to format PC   
    Hi Glauco
    I just changed my Server from WHS 2011 to Win 10 with deleting from my OS drive the old partitions and installing Win10 frech from an USB Stick. The drives with my data which were in a Pool I disconnected in this time. Afterwards I installed DrivePool new on the new OS, switched the PC of and connected the data drives. after starting Win 10 I looked in DrivePool and the Pool was there. It worked with my Backup Pool too. Only the drive letter was changed.
    You only have to install DrivePoll and connect all your Pool drives. DrivePool scannes the drives and will find the information it needs.
  2. Like
    Saphir got a reaction from Shane in DrivePool and SSD combinations   
    Thanks for your answers.
    This are the answers from t he costumer service. I post them here because others may have the same questions an will find this answers helpfull too:
    question 1:
    Is the duplication working with having one SSD-drive set for cache. Is DrivePool writing the files to the cache SSD-drive and a duplication to the HDDs in the Archive?
    answer:
    Yes, but if you have duplication enabled, and don't have two SSDs, then yeah, it's falling back to using one of the HDDs.
    question 2:
    How is the reading of this files, is DrivePool reading the files on the cache SSD-drive first if they are still there or will the duplication on the HDD slow it down?
    answer:
    if the files are duplicated, then it has a number of checks to optimize the reads, if read striping is enabled. 
    You can read about this here: https://stablebit.com/Support/DrivePool/2.X/Manual?Section=Performance Options#Read Striping
    question 3:
    Would it be better to have two SSD enabled in the SSD Optimizer as SSDs to get for the files which are actually in the cach the duplication in the cache too, would this work?
    answer:
    Yes.  Ideally. 
    question 4:
    If I use two SSDs in the cache how do I set them? Together in a subpool? Or adding them simple to the main pool and set them both as SSD?
    answer:
    Just add both to the pool, and enable them as "ssd"s in the SSD Optimizer balancers.
    question 5:
    Would it maybe a better solution to get one SSD in the pool and not enable it as SSD-drive in the "SSD Optimizer" to use it as archive with file placement rules for my most used files?
    answer:
    Honestly, either works, but it depends on what you want in your setup.  
    question 6:
    If I try it like in 5. how is it with the duplication would DrivePool read the files from the fast SSD or the slower HDD? Maybe the slow HDD makes the SSD slow too?
    answer:
    It should generally use the SSD, unless it's busy, basically. 
     
    The nice think is DrivePool is working how I thought it should be working :-)
    I ordered now another 1 TB SSD and will set both of my 1TB SSD in the optimizer as SSD. For my enabled duplication that should work best like the answer in question 3 says this is ideally. I will double my RAM to 16 GB too and keep my old CPU ans Mainboard.
  3. Like
    Saphir got a reaction from Shane in DrivePool and SSD combinations   
    @Shane Can you change the title of this thread in "DrivePool and SSD combinations" I think that would fix better to the subject, thanks.
    Not needed anymore. With holfing the right mouse button on the title I was able to change it by myself. Didn't see that feature before and found it now by chance.
  4. Thanks
    Saphir reacted to gtaus in DrivePool and SSD combinations   
    The SSD write cache did increase speed on my system, but it depends on my file transfer scenario. If I am transferring files directly from my server's drive into DrivePool on that same server, I see my maximum speed of the SSD (about 480 MB/s). If I am transferring files over my home network ethernet (about 30 MB/s), or wifi (? MB/s), or from an attached USB HDD (about 80 MB/s), then even my DrivePool archive HDDs are fast enough to keep up with the transfer. 
    I have set aside 100 GB of my 228 GB SSD as my DrivePool write cache and also use that as a cache for my working temp folders. In that way, the 100 GB SSD cache not only works for DrivePool writes, but also as my system cache for both reads/writes for my temp working folders. In those cases, the SSD cache read/writes at about 480 MB/s whereas just my DrivePool archive HDDs would max out around 80-100 MB/s. So, yes, the SSD can significantly increase your speeds, but it all depends on your specific setup.
  5. Thanks
    Saphir reacted to gtaus in DrivePool and SSD combinations   
    DrivePool has a feature called Read Striping, which you can turn on. If the folder is duplicated, DrivePool will read from both drives and that can speed up the read task. If you expand the performance tab, you can see both drives that DrivePool is reading from and the speed at which it is reading. You can almost double the read speed in some transfers.
    What I see on my system is that DrivePool will read from both my SSD and an archive HDD at the same time, but since the SSD is just so much faster, most of the read data comes from the SSD. I don't know if DrivePool is specifically programmed to recognize the faster drive and use that pipeline first, but in effect that is what I see happening on my system. My read speed, with Read Striping turned on, in those cases is almost exactly the same as the read speed on my SSD.
    FYI, I only have 1 SSD, so I do not know if DrivePool would Read Strip both of your SSDs and almost double your read speed from the SSDs. Also, in my case, the bottleneck on my transfers is not the DrivePool read speeds, it is the speed of which I can transfer the data over my home network ethernet, the wifi, or to maybe a destination USB HDD. In most of my cases, transfers on my system are slowed down by lots of things but DrivePool is not one of them.
     
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