The VMware vSphere multi-writer option allows VMFS backed disks to be shared by multiple virtual machines this option is used to support VMware fault tolerance which allows a primary virtual machine and a standby virtual machine to simultaneously access a *.vmdk file
A maximum Total Bytes Written (TBW) guarantee is typically provided by the vendor in their specifications this value describes how data can be written to the entire device until the warranty expires and the current value can be checked with S.M.A.R.T.
Connect to the ESXi Host with SSH Identify NVMe drives
Get the „Data Units Written“ counter
The counter is hexadecimal and convert it to decimal this can be done also from the command line
USB Network Native Driver – the ASIX USB 2.0 gigabit network ASIX88178a, ASIX USB 3.0 gigabit network ASIX88179, Realtek USB 3.0 gigabit network RTL8152/RTL8153 and Aquantia AQC111U
VMware vSphere 6.7 – larger and more demanding workloads like databases on top of the latest generations of processors with up to 24 cores special care must be taken in vCPU and vNUMA configuration to ensure performance is optimized
This table outlines how a virtual machine should be configured on a dual socket 10 core physical host to ensure an optimal vNUMA topology and performance regardless of vSphere version where the assigned memory is less than or equal to a pNUMA node
This table outlines how a virtual machine should be configured on a dual socket 10 core physical host to ensure an optimal vNUMA topology and performance regardless of vSphere version where the assigned memory is greater than that of a pNUMA node
VMware vSphere 6.7 – Client IP Pools
VMware vSphere ESXi – a really nice SuperMicro IPMI feature that allows out-of-band (OOB) management of your server. Accessing the IPMI interface is simple by using a browser to browse out to the IP address you see during POST
VMware vSphere vSAN 6.7 P01 – by default in a VM the simultaneous multi-writer “protection” is enabled for all. No More Eager Zero Thick (EZT) requirement for Oracle RAC multi-writer disks starting VMware vSAN 6.7 P01 (ESXi 6.7 Patch Release ESXi670-201912001)
