ALUA Rule for DataCore

When you are using DataCore or other Storage Devices / Vendor for your VMware Environment you should check this out here:

ESXi 6.7 hosts with active/passive or ALUA based storage devices may see premature APD events during storage controller fail-over scenarios (67006)
https://kb.vmware.com/s/article/67006

To Change the ALUA Rules on ESXi-Server running VMware ESXi 6.5 / 6.7 here the snippet

esxcli storage nmp satp rule list -s VMW_SATP_ALUA | grep DataCore
##REMOVE OLD RULE###
esxcli storage nmp satp rule remove -V DataCore -M "Virtual Disk" -s VMW_SATP_ALUA -c tpgs_on -P VMW_PSP_RR
### ADD NEW RULE###
esxcli storage nmp satp rule add -V DataCore -M "Virtual Disk" -s VMW_SATP_ALUA -c tpgs_on -P VMW_PSP_RR -O iops=10 -o disable_action_OnRetryErrors
esxcli storage nmp satp rule list -s VMW_SATP_ALUA | grep DataCore

But please check the actual DataCore FAQ 1556 before using this setting:
The Host Server – VMware ESXi Configuration Guide

Hope that Helps!