November 26, 20187 yr Hello everyone, I had a Single Parity setup so far an want to extend it to a Dual Parity setup. I thus bought a new 8TB drive, pre-cleared it (to make sure it is error-free so far) and ran an extended SMART self-test. All looked good. Then I assigned the pre-cleared disk to the Parity 2 slot and started the array in maintenance mode. After a little time all drives were spun down, also the new parity 2 drive is indicated as inactive. I did not press the "Sync" button under the "Array Operation" tab. The array says: Degraded parity: Parity 2 is invalid Also the following notification was shown: Unraid Parity 2 error Warning [UNRAID] - Parity 2, drive not ready, content being reconstructed The drives are at 40-44 Celsius, except for the Ironwolf NAS drives at 50-52 C. This temperature would indicated the drives area actually not spun down, although the spin indicators show that all drives are spun down. Is it silently reconstructing / building parity on Parity 2 disk or is it indeed idle as shown by the activity indicators? Should I press the "Sync" button? Thank you so much for looking into this!
November 26, 20187 yr Community Expert You don't need maintenance mode to sync parity, just stop the array and start in normal mode, parity should begin syncing at array start, if it doesn't post the diagnostics.
November 26, 20187 yr Author Thanks, I started it in normal mode and it started to build parity right away. The drives are getting pretty warm: 47-49 Celsius (RPM 5400/5900/7200), and the Ironwolfs 54-57 Celsius (RPM 7200). And that is without radiator and low outside temperatures. Seems I have to rethink the cooling concept before summertime?
November 26, 20187 yr Community Expert 1 hour ago, jus7incase said: Seems I have to rethink the cooling concept before summertime? Definitely, disks should be below 40C, 45C tops, 57C is close to permanent damage temperatures.
November 27, 20187 yr Author modern Seagte Ironwolf have an operating range up to 60C. http://knowledge.seagate.com/articles/en_US/FAQ/193771en
November 27, 20187 yr Community Expert Yes, but if you keep them at those temperatures they won't last long, same as always driving your car very close to the max rpm.
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