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    WD Ultrastar DC HC520 / HGST He12 50% slower in the center

    On 3 Seagate IronWolf drives, which have similar specs, show a dip of 55MiB/s, this is some 25% dip. Here we are talking of a 120MiB/s dip, a 50% dip.
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    WD Ultrastar DC HC520 / HGST He12 50% slower in the center

    The WD Ultrastar DC HC520 / HGST He12 should have a transfer rate of 243MiB/sec. This is true for the first two TBs, but than it degrades to only 50% in the center of the drive. Used the following script to run 5 cycles. For each cycle measured the transfer rate at each start of a TB...
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