Updated content.

Author: MaryMichael-MS

articles/migrate/common-questions-business-case.md

@@ -61,6 +61,46 @@ To verify in an existing project:
 
     Germany West Central and Sweden Central
 
+### How do I add facilities costs to my business case?
+
+1. Go to your business case and select **Edit assumptions** and choose **On-premises cost assumptions**.
+1. Select **Facilities** tab. 
+1. Specify estimated annual lease/colocation/power costs that you want to include as facilities costs in the calculations.
+
+If you aren't aware of your facilities costs, use the following methodology.
+
+#### Step-by-step guide to calculate facilities costs
+ The facilities cost calculation in Azure Migrate is based on the Cloud Economics methodology, tailored specifically for your on-premises datacenter. This methodology is based on a colocation model, which prescribes an average cost value per kWh, which includes space, power and lease costs, which usually comprise facilities costs for a datacenter.   
+1. **Determine the current energy consumption (in kWh) for your workloads**: Energy consumption by current workloads = Energy consumption for compute resources + Energy consumption for storage resources.
+    1. **Energy consumption for compute resources**:  
+        1. **Determine the total number of physical cores in your on-premises infrastructure**: In case you don't have the number of physical cores, you can use the formula - Total number of physical cores = Total number of virtual cores/2.
+        1. **Input the number of physical cores into the given formula**: Energy consumption for compute resources (kWh) = Total number of physical cores * On-Prem Thermal Design Power or TDP (kWh per core) * Integration of Load factor * On-premises Power Utilization Efficiency or PUE.
+        1. If you aren't aware of the values of TDP, Integration of Load factor and On-premises PUE for your datacenter, you can use the following assumptions for your calculations:
+            1. On-Prem TDP (kWh per core) = **0.009**
+            1. Integration of Load factor = **2.00** 
+            1. On-Prem PUE = **1.80**
+    1. **Energy consumption for storage resources**:
+        1. **Determine the total storage in use for your on-premises infrastructure in Terabytes (TB)**. 
+        1. **Input the storage in TB into the given formula**: Energy consumption for storage resources (kWh) = Total storage capacity in TB * On-Prem storage Power Rating (kWh per TB) * Conversion of energy consumption into Peak consumption * Integration of Load factor * On-premises PUE (Power utilization effectiveness).
+        1. If you aren't aware of the values of On-premises storage power rating, conversion factor for energy consumption into peak consumption, and Integration of Load factor and On-premises PUE, you can use the following assumptions for your calculations:
+            1. On-Prem storage power rating (kWh per TB) = **10**
+            1. Conversion of energy consumption into peak consumption = **0.0001**
+            1. Integration of Load factor = **2.00**
+            1. On-Prem PUE = **1.80**
+1. Determine the unused energy capacity for your on-premises infrastructure. If you aren't aware of the unused capacity, by default you can assume that 40% of the datacenter energy capacity remains unused.
+1. Determine the total energy capacity of the datacenter. Total energy capacity = Energy consumption by current workloads / (1- unused energy capacity).
+1. Calculate total facilities costs per year using the following formula. Facilities costs per year = Total energy capacity * Average colocation costs ($ per kWh per month) * 12. You can assume the average colocation cost = $340 per kWh per month.
+
+**Sample example**  
+
+Assume that Contoso, an e-commerce company has 10,000 virtual cores and 5,000 TB of storage. Let's use the formula to calculate facilities cost:
+1. Total number physical cores = 10,000/2 = **5,000**
+1. Energy consumption for compute resources = 5,000 * 0.009 * 2 * 1.8 = **162** kWh 
+1. Energy consumption for storage resources = 5,000 * 10 * 0.0001 * 2 * 1.8 = **18** kWh 
+1. Energy consumption for current workloads = (162 + 18) kWh = **180** kWh
+1. Total energy capacity of datacenter = 180/(1-0.4) = **300** kWh
+1. Yearly facilities cost = 300 kWh* $340 per kWh * 12 = $1,224,000 = **$1.224** Mn
+
 ## Business case recommendation
 
 
@@ -93,46 +133,6 @@ To deep dive into sizing, readiness, and Azure cost estimates, you can create re
 ### Does the Azure SQL recommendation logic include SQL consolidation?
 No, it doesn't include SQL consolidation.
 
-### How do I add facilities costs to my business case?
-
-1. Go to your business case and select **Edit assumptions** and choose **On-premises cost assumptions**.
-1. Select **Facilities** tab. 
-1. Specify estimated annual lease/colocation/power costs that you want to include as facilities costs in the calculations.
-
-If you aren't aware of your facilities costs, use the following methodology.
-
-### Step-by-step guide to calculate facilities costs
- The facilities cost calculation in Azure Migrate is based on the Cloud Economics methodology, tailored specifically for your on-premises datacenter. This methodology is based on a colocation model, which prescribes an average cost value per kWh, which includes space, power and lease costs, which usually comprise facilities costs for a datacenter.   
-1. **Determine the current energy consumption (in kWh) for your workloads**: Energy consumption by current workloads = Energy consumption for compute resources + Energy consumption for storage resources.
-    1. **Energy consumption for compute resources**:  
-        1. **Determine the total number of physical cores in your on-premises infrastructure**: In case you don't have the number of physical cores, you can use the formula - Total number of physical cores = Total number of virtual cores/2.
-        1. **Input the number of physical cores into the given formula**: Energy consumption for compute resources (kWh) = Total number of physical cores * On-Prem Thermal Design Power or TDP (kWh per core) * Integration of Load factor * On-premises Power Utilization Efficiency or PUE.
-        1. If you aren't aware of the values of TDP, Integration of Load factor and On-premises PUE for your datacenter, you can use the following assumptions for your calculations:
-            1. On-Prem TDP (kWh per core) = 0.009
-            1. Integration of Load factor = 2.00 
-            1. On-Prem PUE = 1.80
-    1. **Energy consumption for storage resources**:
-        1. **Determine the total storage in use for your on-premises infrastructure in Terabytes (TB)**. 
-        1. **Input the storage in TB into the given formula**: Energy consumption for storage resources (kWh) = Total storage capacity in TB * On-Prem storage Power Rating (kWh per TB) * Conversion of energy consumption into Peak consumption * Integration of Load factor * On-premises PUE (Power utilization effectiveness).
-        1. If you aren't aware of the values of On-premises storage power rating, conversion factor for energy consumption into peak consumption, and Integration of Load factor and On-premises PUE, you can use the following assumptions for your calculations:
-            1. On-Prem storage power rating (kWh per TB) = 10
-            1. Conversion of energy consumption into peak consumption = 0.0001
-            1. Integration of Load factor = 2.00
-            1. On-Prem PUE = 1.80
-1. Determine the unused energy capacity for your on-premises infrastructure. If you aren't aware of the unused capacity, by default you can assume that 40% of the datacenter energy capacity remains unused.
-1. Determine the total energy capacity of the datacenter. Total energy capacity = Energy consumption by current workloads / (1- unused energy capacity).
-1. Calculate total facilities costs per year using the following formula. Facilities costs per year = Total energy capacity * Average colocation costs ($ per kWh per month) * 12. You can assume the average colocation cost = $340 per kWh per month.
-
-**Sample example**  
-
-Assume that Contoso, an e-commerce company has 10,000 virtual cores and 5,000 TB of storage. Let's use the formula to calculate facilities cost:
-1. Total number physical cores = 10,000/2 = 5,000 
-1. Energy consumption for compute resources = 5,000*0.009*2*1.8 = 162 kWh 
-1. Energy consumption for storage resources = 5,000*10*0.0001*2*1.8 = 18 kWh 
-1. Energy consumption for current workloads = (162 + 18) kWh = 180 kWh
-1. Total energy capacity of datacenter = 180/(1-0.4) = 300 kWh
-1. Yearly facilities cost = 300 kWh* $340 per kWh * 12 = $1,224,000 = $1.224 In  
-
 ## Next steps
 
 - [Learn more](how-to-build-a-business-case.md) about how to build a Business case.