Automating VM Snapshot Management in VMware vSphere with PowerShell

# Load VMware PowerCLI module
Import-Module VMware.PowerCLI

# Connect to the vSphere server
$vCenterServer = "your_vcenter_server"
$username = "your_username"
$password = "your_password"
Connect-VIServer -Server $vCenterServer -User $username -Password $password

# Define the VMs for snapshot management
$vmNames = @("VM1", "VM2", "VM3") # Replace with your VMs

# Create snapshots for each VM
foreach ($vmName in $vmNames) {
    $vm = Get-VM -Name $vmName
    if ($null -ne $vm) {
        $snapshot = New-Snapshot -VM $vm -Name "Backup-Snapshot-$(Get-Date -Format yyyyMMddHHmmss)" -Description "Snapshot created for backup purposes" -Confirm:$false
        Write-Host "Snapshot created for $vmName with name: $($snapshot.Name)"
    } else {
        Write-Host "VM $vmName not found."
    }
}

# Remove old snapshots
$daysThreshold = 30
foreach ($vmName in $vmNames) {
    $vm = Get-VM -Name $vmName
    if ($null -ne $vm) {
        $oldSnapshots = Get-Snapshot -VM $vm | Where-Object { $_.Created -lt (Get-Date).AddDays(-$daysThreshold) }
        foreach ($snapshot in $oldSnapshots) {
            Remove-Snapshot -Snapshot $snapshot -Confirm:$false
            Write-Host "Removed snapshot: $($snapshot.Name) for VM: $vmName"
        }
    } else {
        Write-Host "VM $vmName not found."
    }
}

# Disconnect from the vSphere server
Disconnect-VIServer -Server $vCenterServer -Confirm:$false