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1. To check how many HBA's are installed and which are all having connectivity # esxcli storage core adapter list HBA Name  Driver      Link State  UID                                   Capabilities                         Description                                                     --------  ----------  ----------  ------------------------------------  -----------------------------------  --------------------------------------------------------------------------------------- vmhba0     hpdsa       link-n/a    unknown.vmhba0                      ...

If you are using ESXi 6.5 and seeing below two issues when using VI web-client interface: Java exceptions during VI web-client navigation Not seeing RDM option while adding disk to VM https://communities.vmware.com/thread/542973 These above issues are resolved in the latest available esx-ui package, which can be downloaded from below VMware URL: https://labs.vmware.com/flings/esxi-embedded-host-client#summary Download Offline bundle for ESXi 6.x - esxui-offline-bundle-6.x-5744014.zip Steps: 1. To check currently installed esx-ui package, login to ESXi 6.5 host via SSH and run: # esxcli software vib list | grep esx-ui esx-ui                         1.8.0-4516221                         VMware     VMwareCertified   2017-07-06 2. Copy zip file to any location on the esxi host for example i am copying it to “da...

LUN reset - Resets the specified LUN by clearing any SCSI reservation on the LUN and making the LUN available to all servers again. The reset does not affect any of the other LUNs on the device. If another LUN on the device is reserved, it remains reserved. Target reset - Resets the entire target. The reset clears any SCSI reservations on all the LUNs associated with that target and makes the LUNs available to all servers again. To check all the available devices: # esxcfg-scsidevs -l naa.60002ac000000000000000860001cb64    Device Type: Direct-Access    Size: 2609152 MB    Display Name: 3PARdata Fibre Channel Disk (naa.60002ac000000000000000860001cb64)    Multipath Plugin: NMP    Console Device: /vmfs/devices/disks/naa.60002ac000000000000000860001cb64    Devfs Path: /vmfs/devices/disks/naa.60002ac000000000000000860001cb64    Vendor: 3PARdata  Model: VV        ...