Seagate Exos power settings - any experiences at your sites?

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We have been seeing some odd behavior with scrubbing (very slow) and OSD
warnings on a couple of new clusters.  A bit of research turned up this:

We've installed the tool from and
disabled EPC power features similar to:

openSeaChest_PowerControl --scan|grep ST|awk '{print $2}'|xargs -I {}
openSeaChest_PowerControl -d {} --EPCfeature disable

Things seem to be better now on those two clusters. Has anyone seen
anything similar? This would seem to be a huge issue if all defaults on
Exos are wrong (stop-and-go on all Ceph/ZFS workloads).
Best regards,
Alex Gorbachev
Intelligent Systems Services Inc.
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