From 9419979a1c6dbfff329b5b32cae24fd19d5de60b Mon Sep 17 00:00:00 2001
From: tombuildsstuff <git@ibuildstuff.co.uk>
Date: Tue, 23 Jan 2018 16:40:30 +0100
Subject: [PATCH] Handling the Storage Account Type being case insensitive

---
 azurerm/resource_arm_managed_disk.go | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/azurerm/resource_arm_managed_disk.go b/azurerm/resource_arm_managed_disk.go
index e66c44316b8b..d531e5136ebb 100644
--- a/azurerm/resource_arm_managed_disk.go
+++ b/azurerm/resource_arm_managed_disk.go
@@ -37,8 +37,8 @@ func resourceArmManagedDisk() *schema.Resource {
 				Type:     schema.TypeString,
 				Required: true,
 				ValidateFunc: validation.StringInSlice([]string{
-					string(compute.PremiumLRS),
 					string(compute.StandardLRS),
+					string(compute.PremiumLRS),
 				}, true),
 				DiffSuppressFunc: ignoreCaseDiffSuppressFunc,
 			},
@@ -119,6 +119,13 @@ func resourceArmManagedDiskCreate(d *schema.ResourceData, meta interface{}) erro
 	tags := d.Get("tags").(map[string]interface{})
 	expandedTags := expandTags(tags)
 
+	var skuName compute.StorageAccountTypes
+	if strings.ToLower(storageAccountType) == strings.ToLower(string(compute.PremiumLRS)) {
+		skuName = compute.PremiumLRS
+	} else {
+		skuName = compute.StandardLRS
+	}
+
 	createDisk := compute.Disk{
 		Name:     &name,
 		Location: &location,
@@ -126,7 +133,7 @@ func resourceArmManagedDiskCreate(d *schema.ResourceData, meta interface{}) erro
 			OsType: compute.OperatingSystemTypes(osType),
 		},
 		Sku: &compute.DiskSku{
-			Name: compute.StorageAccountTypes(storageAccountType),
+			Name: (skuName),
 		},
 		Tags: expandedTags,
 	}