升级到了一下esxi 6.7 update3

本来还怕把我的生产服务器搞到宕机；

还好，升级很简单，很平稳。

虽然表面上看不出来太多改进，

但是从虚拟机上装的freenas来看，好像通过smba连接为一个远程盘之后，从本地的百度云往里面下载文件，速度和稳定性高了很多。

我们来看看esxi 6.7 update3官方的发布说明，有哪些更新和修正：

What's New

ixgben driver enhancements: The ixgben driver adds queue pairing to optimize CPU efficiency.VMXNET3 enhancements: ESXi 6.7 Update 3 adds guest encapsulation offload and UDP, and ESP RSS support to the Enhanced Networking Stack (ENS). Checksum calculations are offloaded from encapsulated packets to the virtual device emulation and you can run RSS on UDP and ESP packets on demand. UDP RSS supports both IPv4 and IPv6, while ESP RSS supports only IPv4. The feature requires a corresponding VMXNET3 v4 driver.NVIDIA virtual GPU (vGPU) enhancements: With vCenter Server 6.7 Update 3, you can configure virtual machines and templates with up to four vGPU devices to cover use cases requiring multiple GPU accelerators attached to a virtual machine. To use the vMotion vGPU feature, you must set the vgpu.hotmigrate.enabled advanced setting to true and make sure that both your vCenter Server and ESXi hosts are running vSphere 6.7 Update 3.
vMotion of multi GPU-accelerated virtual machines might fail gracefully under heavy GPU workload due to the maximum switch over time of 100 secs. To avoid this failure, either increase the maximum allowable switch over time or wait until the virtual machine is performing a less intensive GPU workload.bnxtnet driver enhancements: ESXi 6.7 Update 3 adds support for Broadcom 100G Network Adapters and multi-RSS feed to the bnxtnet driver.QuickBoot support enhancements: ESXi 6.7 Update 3 whitelists Dell EMC vSAN Ready Nodes servers R740XD and R640 for QuickBoot support.Configurable shutdown time for the sfcbd service: With ESXi 6.7 Update 3, you can configure the shutdown time of the sfcbd service. You can set a shutdown time depending on the third-party CIM provider that you use, or else use the default setting of 10 sec.

反正我的32G内存ddr4，i7-8代工控板，之前虚拟的服务器centos 如果跑满各个服务，内存要消耗到10G，现在暂时感觉少了很多，也许只是重启的功效。看看长时间的观察怎么样。

但是freenas做存储，下载目的盘，透过内网的百度云客户端的性能，也连续观察两天试试。