Systemmediasize startup option added in esxi 7.0 update 1C

This week, VMware Released ESXi 7.0 Update 1c to update , see Release notes, I found an interesting passage .

 

With ESXi 7.0 Update 1c, you can use the installer boot optionsystemMediaSizeto limit the size of system storage partitions on the boot media. If your system has a small footprint that does not require the maximum 138 GB system-storage size, you can limit it to the minimum of 33 GB. ThesystemMediaSize parameter accepts the following values:

min (33 GB, for single disk or embedded servers)

small (69 GB, for servers with at least 512 GB RAM)

default (138 GB)

max (consume all available space, for multi-terabyte servers)

The selected value must fit the purpose of your system. For example, a system with 1TB of memory must use the minimum of 69 GB for system storage. To set the boot option at install time, for examplesystemMediaSize=small, refer toEnter Boot Options to Start an Installation or Upgrade Script. For more information, see VMware knowledge base article81166.

For this startup option , My understanding is before ESXi 7.0 The default maximum will be 138GB Left and right hard disks , That's what I mentioned above default( These include BOOTBANK1, BOOTBANK2, also OSDATA, When the hard disk is HDD when ,OSDATA Will not be used as virtual flash , here OSDATA The type is VMFS-L. When the hard disk is SSD when ,OSDATA Will be used as virtual flash memory at the same time , here OSDATA The type is VFFS.) I wrote before that we can set autoPartitionOSDataSize To adjust OSDATA Size .  How to prevent ESXi7.0 Virtual flash memory takes up your small hard disk  , But this method is not an official solution .

this systemMediaSize Parameters can be understood. The official provides several preset values for this (min, small, default, max). We can install it before it starts Shift+O To add parameters systemMediaSize=min, Or on the installation media boot.cfg In the document kernelopt=runweasel Add something like systemMediaSize=min Parameters of , Let this installer automatically set parameters .

kernelopt=runweasel systemMediaSize=min

here , The general situation of hard disk space after installation is shown in the figure below , The system space occupation is about 33GB.

The system hard disk space is occupied