Data Center Machines Daily Cost

Products

• CloudHealth

Issue/Introduction

The VM Cost details generated by the Cost Engine are as follows:

{
  "moid": "XXXXX",
  "lastUpdatedTimeInMillis": 0,
  "allocationBasedCpuMTDCost": 0.11058541773473808089,
  "allocationBasedMemoryMTDCost": 0.44588757229671619264,
  "allocationBasedStorageMTDCost": 2.6666666666666666666,
  "isReclaimableIdle": 0,
  "isReclaimablePoweredOff": 0,
  "isOverSized": 0,
  "functionalKey": "XXXXX",
  "vcUuid": "XXXXX",
  "resourceType": "VM",
  "datacenterMoid": "datacenter-2",
  "datacenterName": "XXXXX",
  "clusterMoid": "XXXXX",
  "clusterName": "BJS-CLUSTER",
  "resourceName": "prod43168",
  "vcName": "XXXXX",
  "endPointLink": "13606456393757",
  "tenantId": "XXXXX",
  "osType": "WINDOWS_SERVER",
  "serverMoid": "XXXXX",
  "serverName": "XXXXX",
  "vmCreationTime": 1698969913294,
  "powerState": "on",
  "memCapacityGbs": 16.0,
  "storageCapacityGbs": 400.0,
  "utilizedStorageGbs": 0.0,
  "utilizedCpuGhz": 0.0,
  "utilizedMemGbs": 0.0,
  "provisionedVcpuCnt": 4,
  "cpuBaseRate": 0.010661096110475289,
  "memoryBaseRate": 0.027867973268544764,
  "totalCost": 3.3807999999999998053,
  "vmDirectCost": 3.38079999999999980531129040173254907131195068359375,
  "vmInDirectCost": 0E-18,
  "vmStorageCost": 0,
  "vmMemoryCost": 0E-18,
  "vmCpuCost": 0E-18,
  "allocationBasedTotalCost": 48.504755193773692945,
  "allocationBasedCpuCost": 1.54819584828633312,
  "allocationBasedMemoryCost": 6.242426012154026688,
  "allocationBasedStorageCost": 37.333333333333333332,
  "osLaborTotalCost": 1.4048,
  "recordTimeMillis": "1698970326000"
}

 
To calculate the VM cost, we need to use base rates (allocationBasedCpuBaseRate and allocationBasedMemoryBaseRate) from the corresponding cluster, which, in this case, is the BJS-CLUSTER. Here are the cost details for the cluster:
 

{
"moid": "XXXXX",
"lastUpdatedTimeInMillis": 0,
"isReclaimableIdle": 0,
"isReclaimablePoweredOff": 0,
"isOverSized": 0,
"functionalKey": "XXXXX",
"vcUuid": "XXXXX",
"resourceType": "CLUSTER",
"datacenterMoid": "datacenter-2",
"datacenterName": "XXXXX",
"clusterMoid": "XXXXX",
"clusterName": "BJS-CLUSTER",
"symphonyResourceId": "XXXXX",
"resourceName": "BJS-CLUSTER",
"vcName": "XXXXX",
"endPointLink": "13606456393757",
"tenantId": "XXXXX",
"numVms": 218,
"totalCpuCoreCnt": 280,
"cpuCapacityGhz": 726.096,
"memCapacityGbs": 10236.696681976318,
"storageCapacityGbs": 33574.8740234375,
"utilizedCpuGhz": 0.0,
"utilizedMemGbs": 0.0,
"provisionedVcpuCnt": 794,
"provisionedMemGbs": 3634.640625,
"cpuBaseRate": 0.3198328833142587,
"memoryBaseRate": 0.8360391980563429,
"allocationBasedCpuBaseRate": 0.41469531650526780332,
"allocationBasedMemoryBaseRate": 0.41801959902817143060,
"avgVmUtilizedCpuGhz": 0.0,
"avgVmUtilizedMemGbs": 0.0,
"avgVmProvisionedMemGbs": 16.672663417431192,
"avgVmProvisionedVcpuCnt": 3.6422018348623855,
"totalCost": 4395.2545309942285029,
"totalMTDCost": 439.52545309942285029,
"avgVmCost": 3.3807999999999998053,
"recordTimeMillis": "1698970326000"
}

Resolution

Based on the recordTimeMillis provided (3rd November 00:12:06 UTC) for the last two days of November, the MTD Cost calculation is as follows:
MTD Cost = (Base Rate * No of Days) / Total Days in Month
 
CPU Cost:
CPU Cost = CPU Count * AllocationBasedCpuBaseRate (of the corresponding cluster) = 4 * 0.414695317 = 1.658781266
allocationBasedCpuMTDCost = (1.658781266 * 2) / 30 = 0.110585418
 
Memory Cost:
Memory Cost = VM's Memory Capacity * Allocation Based Memory Base Rate = 16 * 0.418019599 = 6.688313584
allocationBasedMemoryMTDCost = (6.688313584 * 2) / 30 = 0.445887572
 
Storage Cost:
Storage Cost = Storage Allocated * Base Rate = 400 * 0.1 = 40
allocationBasedStorageMTDCost = (40 * 2) / 30 = 2.666666667
 
VM MTD Cost:
VM MTD Cost = allocationBasedCpuMTDCost + allocationBasedMemoryMTDCost + allocationBasedStorageMTDCost
VM MTD Cost = 0.110585418 + 0.445887572 + 2.666666667 = 3.223139657
 
Allocation Based Total Cost:
allocationBasedTotalCost = (VM MTD Cost * VM Days in the Month) / (No. of Days in the Month)
allocationBasedTotalCost = (3.223139657 * 30) / 2 = 48.34709485047181
 
For the Daily VM Cost, we divide allocationBasedTotalCost by 30.45 (average days in a month):
 
Daily VM Cost:
Daily VM Cost = 48.34709485047181 / 30.45 = 1.587753525