July 2, 201313 yr My parity drive is 3TB and I'd like to take it to 4TB so I can use newer drives down the road, and replace a 1TB member disk with the 3TB former parity drive. Seems like a simple enough procedure, but we are going into monsoon season as I type this, with power outages possible/likely. I need to pick up some extra storage relatively soon, but am concerned about a parity sync being interrupted by a power failure. Assuming all of the drives in the array survive, is the worst that will happen the parity sync will have to be re-started? Or is there a potential for data corruption of member disks at any point along the way? I will hold off as long as I can but my array is nearing capacity. Adding disks would be about twice as expensive as upgrading a drive, as I'd need an additional cage and controller.
July 2, 201313 yr I wouldn't worry about it... even if something happens when new parity is building, you can always go back to your orginal 1. Shutdown 2. Take out Parity 3. Insert New Parity 4. Rebuild After rebuild... check parity again 5. Insert 3tb to replace 1tb 6. Rebuild
July 2, 201313 yr Any short outages should be covered by your UPS ... and if not, then the system will still do an orderly shutdown, and you can do the parity sync the next time you reboot the system.
July 2, 201313 yr Any short outages should be covered by your UPS ... and if not, then the system will still do an orderly shutdown, and you can do the parity sync the next time you reboot the system. I don't think he has a UPS...
July 2, 201313 yr ... ALL UnRAID servers should have a UPS It's surprising to me that folks who think enough of their data to build a fault-tolerant server to hold it don't provide basic power protection for that server !!
July 3, 201313 yr Author I have a UPS. Its small. Won't last terribly long. Doesnt have USB out so I can't tell the server to shutdown. A new one is on the list.
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