diff --git a/README.md b/README.md
index fd61976..ce4a197 100644
--- a/README.md
+++ b/README.md
@@ -37,8 +37,8 @@ module "vmscaleset" {
   vmscaleset_name      = "testvmss"
 
   # (Optional) To enable Azure Monitoring and install log analytics agents
+  # (Optional) Specify `storage_account_name` to save monitoring logs to storage. 
   log_analytics_workspace_name = var.log_analytics_workspace_name
-   storage_account_name        = var. storage_account_name
 
   # Deploy log analytics agents to virtual machine. Log analytics workspace name required.
   # Defaults to `false` 
diff --git a/examples/README.md b/examples/README.md
index 532a2da..e3af8c5 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -27,8 +27,8 @@ module "vmscaleset" {
   vmscaleset_name      = "testvmss"
 
   # (Optional) To enable Azure Monitoring and install log analytics agents
+  # (Optional) Specify `storage_account_name` to save monitoring logs to storage.   
   log_analytics_workspace_name = var.log_analytics_workspace_name
-  storage_account_name         = var.storage_account_name
 
   # Deploy log analytics agents to virtual machine. Log analytics workspace name required.
   # Defaults to `false` 
@@ -117,8 +117,8 @@ module "vmscaleset" {
   vm_computer_name     = "websrv1"
 
   # (Optional) To enable Azure Monitoring and install log analytics agents
+  # (Optional) Specify `storage_account_name` to save monitoring logs to storage.   
   log_analytics_workspace_name = var.log_analytics_workspace_name
-  storage_account_name         = var.storage_account_name
 
   # Deploy log analytics agents to virtual machine. Log analytics workspace name required.
   # Defaults to `false` 
diff --git a/examples/linux_vm_scale_sets/README.md b/examples/linux_vm_scale_sets/README.md
index e96fcc9..2ecf85a 100644
--- a/examples/linux_vm_scale_sets/README.md
+++ b/examples/linux_vm_scale_sets/README.md
@@ -21,8 +21,8 @@ module "vmscaleset" {
   vmscaleset_name      = "testvmss"
 
   # (Optional) To enable Azure Monitoring and install log analytics agents
+  # (Optional) Specify `storage_account_name` to save monitoring logs to storage.   
   log_analytics_workspace_name = var.log_analytics_workspace_name
-  storage_account_name         = var.storage_account_name
 
   # Deploy log analytics agents to virtual machine. Log analytics workspace name required.
   # Defaults to `false` 
diff --git a/examples/linux_vm_scale_sets/main.tf b/examples/linux_vm_scale_sets/main.tf
index d8ee8c3..2d838cc 100644
--- a/examples/linux_vm_scale_sets/main.tf
+++ b/examples/linux_vm_scale_sets/main.tf
@@ -14,8 +14,8 @@ module "vmscaleset" {
   vmscaleset_name      = "testvmss"
 
   # (Optional) To enable Azure Monitoring and install log analytics agents
+  # (Optional) Specify `storage_account_name` to save monitoring logs to storage.   
   log_analytics_workspace_name = var.log_analytics_workspace_name
-  storage_account_name         = var.storage_account_name
 
   # Deploy log analytics agents to virtual machine. Log analytics workspace name required.
   # Defaults to `false` 
diff --git a/examples/windows_vm_scale_sets/README.md b/examples/windows_vm_scale_sets/README.md
index 2b84161..8863377 100644
--- a/examples/windows_vm_scale_sets/README.md
+++ b/examples/windows_vm_scale_sets/README.md
@@ -22,8 +22,8 @@ module "vmscaleset" {
   vm_computer_name     = "websrv1"
 
   # (Optional) To enable Azure Monitoring and install log analytics agents
+  # (Optional) Specify `storage_account_name` to save monitoring logs to storage.   
   log_analytics_workspace_name = var.log_analytics_workspace_name
-  storage_account_name         = var.storage_account_name
 
   # Deploy log analytics agents to virtual machine. Log analytics workspace name required.
   # Defaults to `false` 
diff --git a/examples/windows_vm_scale_sets/main.tf b/examples/windows_vm_scale_sets/main.tf
index ee26258..5582688 100644
--- a/examples/windows_vm_scale_sets/main.tf
+++ b/examples/windows_vm_scale_sets/main.tf
@@ -15,8 +15,8 @@ module "vmscaleset" {
   vm_computer_name     = "websrv1"
 
   # (Optional) To enable Azure Monitoring and install log analytics agents
+  # (Optional) Specify `storage_account_name` to save monitoring logs to storage.   
   log_analytics_workspace_name = var.log_analytics_workspace_name
-  storage_account_name         = var.storage_account_name
 
   # Deploy log analytics agents to virtual machine. Log analytics workspace name required.
   # Defaults to `false` 
diff --git a/main.tf b/main.tf
index c9ec656..d2dfa40 100644
--- a/main.tf
+++ b/main.tf
@@ -484,7 +484,7 @@ resource "azurerm_monitor_diagnostic_setting" "vmmsdiag" {
   count                      = var.log_analytics_workspace_name != null && var.storage_account_name != null ? 1 : 0
   name                       = lower("${var.vmscaleset_name}-diag")
   target_resource_id         = var.os_flavor == "windows" ? azurerm_windows_virtual_machine_scale_set.winsrv_vmss.0.id : azurerm_linux_virtual_machine_scale_set.linux_vmss.0.id
-  storage_account_id         = data.azurerm_storage_account.storeacc.0.id
+  storage_account_id         = var.storage_account_name != null ? data.azurerm_storage_account.storeacc.0.id : null
   log_analytics_workspace_id = data.azurerm_log_analytics_workspace.logws.0.id
 
   metric {
@@ -500,7 +500,7 @@ resource "azurerm_monitor_diagnostic_setting" "nsg" {
   count                      = var.log_analytics_workspace_name != null && var.storage_account_name != null ? 1 : 0
   name                       = lower("nsg-${var.vmscaleset_name}-diag")
   target_resource_id         = azurerm_network_security_group.nsg.id
-  storage_account_id         = data.azurerm_storage_account.storeacc.0.id
+  storage_account_id         = var.storage_account_name != null ? data.azurerm_storage_account.storeacc.0.id : null
   log_analytics_workspace_id = data.azurerm_log_analytics_workspace.logws.0.id
 
   dynamic "log" {