Host System Resource Allocation / Reservation via PowerCLI

[dtracey]

Hello again chaps,

Does anyone know if there is a way to set the reserved CPU and memory for a host via PowerCLI?

(Host > Configuration > System Resource Allocation > Edit)

I usually set the memory reservation to 800MB and the CPU to 800MHz as per design best practices.

Thanks,

Dan

[LucD · Accepted solution]

Afaik, there is no cmdlet for that, but you can use the UpdateSystemResources method.

You just need to know that the key for those entries is "host/system".

$esx = Get-VMHost MyHost 

$spec = New-Object VMware.Vim.HostSystemResourceInfo
 $spec.key = "host/system"
 $spec.Config = New-Object VMware.Vim.ResourceConfigSpec
$spec.Config.cpuAllocation = New-Object VMware.Vim.ResourceAllocationInfo
$spec.Config.cpuAllocation.reservation = 800
$spec.Config.memoryAllocation = New-Object VMware.Vim.ResourceAllocationInfo
$spec.Config.memoryAllocation.reservation = 800
$spec.Config.ChangeVersion = $esx.ExtensionData.SystemResources.Config.ChangeVersion

$esx.ExtensionData.UpdateSystemResources($spec)