Archive for the ‘VMware vSphere 6.7’ Category
VMware vSphere 6.x/7.x – contain a use-after-free vulnerability in the XHCI USB controller
Freitag, November 20th, 2020VMware vSphere – VMFS is a clustered file system that disables by default multiple virtual machines from opening and writing to the same virtual disk *.vmdk file
Samstag, Juli 4th, 2020
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
VMware Lifecycle Product Matrix – Supported Products, as of June 1, 2020
Freitag, Juni 12th, 2020
VMware vSphere – how to check NVMe Drives Total Bytes Written (TBW) with PowerCLI
Montag, März 16th, 2020
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
# esxcli nvme device list
HBA Name Status Signature
——– —— ———————
vmhba0 Online nvmeMgmt-nvme00610000
Get the „Data Units Written“ counter
# esxcli nvme device log smart get -A vmhba0 |grep Written
Data Units Written: 0xe1c78d
The counter is hexadecimal and convert it to decimal this can be done also from the command line
# printf „%d\n“ 0xe1c78d
14796685
VMware vSphere 6.7 – USB Network Native Driver
Montag, Februar 24th, 2020USB 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 – a NUMA deep dive
Samstag, Februar 22nd, 2020VMware vSphere 6.7 – Virtual Machine vCPU and vNUMA Rightsizing
Samstag, Februar 22nd, 2020VMware 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
Nvidia Tesla P4 GPU – designed to optimize complex graphics operations and enable them to run at high performance without overloading the CPU
Mittwoch, Februar 19th, 2020
VMware vSphere 6.7 – Client IP Pools
Samstag, Februar 8th, 2020VMware vSphere 6.7 – Client IP Pools
VMware vSphere 6.7 – if a CPU has more than 32 cores a additional CPU licenses will be required
Freitag, Februar 7th, 2020
VMware vSphere ESXi – host displays an error and fails to boot when two ESXi installations are on the same system
Donnerstag, Januar 23rd, 2020VMware Lifecycle Product Matrix – Supported Products, as of January 1, 2020
Samstag, Januar 4th, 2020
VMware vSphere ESXi – remote install using SuperMicro IPMI
Samstag, Januar 4th, 2020VMware 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 – Storage migration of an Oracle RAC with no remediation required for shared disks anymore
Sonntag, Dezember 15th, 2019VMware 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)
VMware vSphere ESXi Hypervisor 6.7 – Limitations and Features
Montag, November 25th, 2019- No vCenter integration or clustering
- No backups from third-party backup solution
- Maximum of 8 vCPUs for VMs running on ESXi 6.7 free
- Maximum of 2 CPUs in your physical ESXi host
- Maximum RAM 12TB
- No VMware Support