December 27, 20214 yr I recently built a new second unRAID server and ran an initial parity build following pre-clears of the new 6TB drives I am using. I noticed a gradual deterioration of progress. The stats for the operation (I/O and CPU) are as follows: There were no other activities present on the server other than the small amount of browsing I was doing. Given this involved identical drives, all running for the duration of the build, is this obviously clear pattern explainable/normal? I would like to understand this a little more before loading the containers and plugins I will be using. Any insights are appreciated!
December 27, 20214 yr Community Expert It is normal for the speed of a disk to get slower as the drive heads move towards the inner tracks. I believe that the reason is that the tracks are getting shorter and can thus hold less data per revolution of the disk.
December 27, 20214 yr Author I did see the same performance pattern on the preclears so that makes sense. Thanks itimpi.
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