ALUA is type of storage device that is capable of servicing IO to given LUN on two different Storage Processors but in an uneven manner. ALUA is also known as Asymmetric Active/Active Arrays. Active/Active -> Both the Controller ports receives IO Commands to LUN. Asymmetric -> Only one controller which is owning the LUN can issues IO to that LUN.
There are 3 ESXi Host having different CPU configuration as mentioned in above diagram.
There is CPU intensive VM running on host executing CPU workload which triggers 4 Independent Processes with IPC (inter process communication) disabled.
VM configuration is already mentioned in above Diagram.
I will be discussing few more useful Storage Commands widely used in Troubleshooting Storage issues or Configuring & Managing Storage devices in vSphere Environment. These command used to retrieve information about HBA installed on ESXi host.
There are three VMs connected to vSwitch. VM1 Mac Adress is AA, VM2 Mac Address is BB,VM3 Mac Address is CC.
vmnic0 is uplink connected to Physical Switch Port ( Let’s say 0/1). This Uplink Mac Address is XX.
How Physical Switch will be processing VMs Packets coming from vSwitch and goes on Wire.
In this post, I am going to explain one of the most frequently used storage commands help vmware admin to retrieve information particularly about Storage device, Multipathing information about LUN, Queue Depth & Troubleshooting storage issues.