October 11, 201015 yr I don't have the best understanding of this whole thing, as I have only been using it for a few days. Its great and I love the expandability. Question: I have a 3 drive setup. Parity 750GB 2 - 500GB drives for data. By my estimate, I should only be able to use 750 GB on the two data disks, because the parity disk is a 750GB drive. Yet my OS tells me that I have 1TB available for use. Is this right? Why? What would happen if I used 950GB and a 500GB drive crashed? How can a 750GB parity drive restore 950GB of data? Help!
October 11, 201015 yr I don't have the best understanding of this whole thing, as I have only been using it for a few days. Its great and I love the expandability. Question: I have a 3 drive setup. Parity 750GB 2 - 500GB drives for data. By my estimate, I should only be able to use 750 GB on the two data disks, because the parity disk is a 750GB drive. Yet my OS tells me that I have 1TB available for use. Is this right? Yes. Why?Because it is a parity disk, not a mirror of your data. What would happen if I used 950GB and a 500GB drive crashed? How can a 750GB parity drive restore 950GB of data?It can restore any single drive smaller or equal in size to the parity disk by using the calculations derieved from it in combination with all the other data drives. See here in the wiki for some explanations: http://lime-technology.com/wiki/index.php?title=FAQ#How_does_parity_work.3F
October 11, 201015 yr By my estimate, I should only be able to use 750 GB on the two data disks, because the parity disk is a 750GB drive. Yet my OS tells me that I have 1TB available for use. Is this right? Why? What would happen if I used 950GB and a 500GB drive crashed? How can a 750GB parity drive restore 950GB of data? let's say (a) you create two user shares, share A uses data disk1 and share B uses data disk 2. What will be the size of each share you will see? (b) Delete those user shares you created at (a), then create a new user share C use both data disk 1 and 2, again What will be the size of this share you will see? When you have one 500GB disk crash, you lost 50% of this 1TB, that is how 750GB parity can rebuild 500GB of lose data.
October 11, 201015 yr Author Wow, it all makes sense. This is pretty genius stuff. I can't wait for 5.0. thanks for the quick responses.
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