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VMWare datastores offline due to aggressive Capacity tiering

  1. Last updated
    May 6, 2025
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Views:
7
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:
5/6/2025, 1:37:50 PM

Applies to

  • ONTAP 9
  • ONTAP S3

Issue

  • After changing the minimum-cooling-days from 31 to 2, VMWare datastores experienced severe latency and even went offline trying to access "cold" data
  • Events like below are seen in EMS logs 
Sun Jan 12 15:13:09 +0800 [AFF800-01: OscHighPriThreadPool: wafl.ca.latency.threshold:notice]: Measured latency from cloud (7496 msec) more than threshold (5000 msec) (aggregate: "aggr1_AFF800_01", aggregate uuid: "b65e0975-eaad-4578-9799-91063ab3b627", object store: "LocalFPwithS3")

 

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