Many log messages come up referring to the device WWN naa id
e.g
2019-09-02T10:30:44.337Z: [scsiCorrelator] 304273812631us: [vob.scsi.device.io.latency.high] Device naa.60002ac000000000000000140001eac6 performance has deteriorated. I/O latency increased from average value of 826 microseconds to 16837 microseconds.
2019-09-02T10:30:44.337Z: [scsiCorrelator] 304280755082us: [esx.problem.scsi.device.io.latency.high] Device naa.60002ac000000000000000140001eac6 performance has deteriorated. I/O latency increased from average value of 826 microseconds to 16837 microseconds.
A quick way to map the naa id to datastore is with the following:
esxcli storage vmfs extent list | grep 60002ac000000000000000140001eac6
DatastoreName-Perf-3 59f0fea6-3f1d7349-aa18-4a9bf82000c2 0 naa.60002ac000000000000000140001eac6 1
See also another Cody Hosterman page