November 22, 201411 yr I'm running a parity check (which for me is a 14 hour process :'( ) and I'm down to the last couple of hours and four of my drives have parked themselves. Is this possible? My array is parity 4gb drive1 4gb drive2 4gb drive3 2gb drive4 2gb drive5 2gb drive6 2gb drive7 2gb parity & first three are on the mobo controller and then the remaining are on two pci controllers (two on each). The four non-mobo drives are now parked. There is also significantly more free space on the four non-mobo drives. Does unRaid do something to determine when it gets to the end of data on drives? If not I would have expected all of the drives to keep spinning through the entire parity check. Thoughts? Thanks.
November 22, 201411 yr Why would a drive that is only 2tb in size remain spinning when the system is reading data from the beyond the 2 tb region (2.001 to 4 tb)? Possible answers might be it is in the same controller group as other active drives and the user has spin up groups enabled. If thats not the case, then the drive should spin down after it idles out from no longer being used.
November 22, 201411 yr Author BRiT, that makes sense. I just assumed that the parity check would keep them all spinning for the entire process. With about two hours to go a fifth drive has spun down. However, I'm not sure why the smaller drives didn't spin down much sooner, like at about the half way point. I'm going to decrease the spin down delay and see what happens next time. Thanks.
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