Huawei OceanStor, Dorado

Assure that performance monitoring collection is enabled on the storage and historical collection is set to 300 secs.
It must be set to 300 seconds to work correctly!
Huawei OceanStor monitoring setup

Some models do not allow such change from the storage UI, use storage CLI instead: 
admin:/>change performance statistic_enabled enabled=no
admin:/>change performance strategy interval=60s
admin:/>change performance strategy archive_time=300s
admin:/>change performance statistic_enabled enabled=yes
admin:/>show performance strategy
  Sampling Interval(s) : 60
  Archive Enabled      : Yes
  Archive Time(s)      : 300
  Auto Stop            : No
  Duration(days)       : --

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