diff --git a/OvmfPkg/OvmfPkg.fdf b/OvmfPkg/OvmfPkg.fdf
index 4b36af6383..f20a9d5ae4 100644
--- a/OvmfPkg/OvmfPkg.fdf
+++ b/OvmfPkg/OvmfPkg.fdf
@@ -117,7 +117,9 @@ INF  PcAtChipsetPkg/KbcResetDxe/Reset.inf
 INF  MdeModulePkg/Universal/Metronome/Metronome.inf
 INF  PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcatRealTimeClockRuntimeDxe.inf
 
-INF  MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
+INF  OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.inf
+INF  MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
+INF  MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
 INF  MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf
 INF  MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
 INF  MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index f93a183165..41559380c2 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -182,7 +182,10 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxPeimPerFv|32
   gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize|0x400
   gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize|0x8000
-  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0x10000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0xc000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize|0xc000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize|0x2000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize|0x10000
 
   gEfiEdkModulePkgTokenSpaceGuid.PcdDxePcdDatabaseTraverseEnabled|TRUE
   gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress|0x0
@@ -209,6 +212,10 @@
 
 [PcdsDynamicDefault.common]
   gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase|0
+
 
 ################################################################################
 #
@@ -280,7 +287,12 @@
       TimerLib|OvmfPkg/Library/AcpiTimerLib/AcpiTimerLib.inf
   }
 
-  MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
+  OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.inf {
+    <LibraryClasses>
+      PlatformFvbLib|OvmfPkg/Library/EmuVariableFvbLib/EmuVariableFvbLib.inf
+  }
+  MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
+  MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
   MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf
   MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
   MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index a99f036884..fc52509142 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -182,7 +182,10 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxPeimPerFv|32
   gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize|0x400
   gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize|0x8000
-  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0x10000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0xc000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize|0xc000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize|0x2000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize|0x10000
 
   gEfiEdkModulePkgTokenSpaceGuid.PcdDxePcdDatabaseTraverseEnabled|TRUE
   gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress|0x0
@@ -210,6 +213,10 @@
 
 [PcdsDynamicDefault.common]
   gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase|0
+
 
 ################################################################################
 #
@@ -282,7 +289,12 @@
       TimerLib|OvmfPkg/Library/AcpiTimerLib/AcpiTimerLib.inf
   }
 
-  MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
+  OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.inf {
+    <LibraryClasses>
+      PlatformFvbLib|OvmfPkg/Library/EmuVariableFvbLib/EmuVariableFvbLib.inf
+  }
+  MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
+  MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
   MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf
   MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
   MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
diff --git a/OvmfPkg/OvmfPkgIa32X64.fdf b/OvmfPkg/OvmfPkgIa32X64.fdf
index 9c061454bf..c2184e451d 100644
--- a/OvmfPkg/OvmfPkgIa32X64.fdf
+++ b/OvmfPkg/OvmfPkgIa32X64.fdf
@@ -117,7 +117,9 @@ INF  PcAtChipsetPkg/KbcResetDxe/Reset.inf
 INF  MdeModulePkg/Universal/Metronome/Metronome.inf
 INF  PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcatRealTimeClockRuntimeDxe.inf
 
-INF  MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
+INF  OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.inf
+INF  MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
+INF  MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
 INF  MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf
 INF  MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
 INF  MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index 272b808a64..3d0430e200 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -182,7 +182,10 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdPeiCoreMaxPeimPerFv|32
   gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize|0x400
   gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize|0x8000
-  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0x10000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize|0xc000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize|0xc000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize|0x2000
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize|0x10000
 
   gEfiEdkModulePkgTokenSpaceGuid.PcdDxePcdDatabaseTraverseEnabled|TRUE
   gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress|0x0
@@ -210,6 +213,10 @@
 
 [PcdsDynamicDefault.common]
   gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingBase|0
+  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareBase|0
+
 
 ################################################################################
 #
@@ -281,7 +288,12 @@
       TimerLib|OvmfPkg/Library/AcpiTimerLib/AcpiTimerLib.inf
   }
 
-  MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
+  OvmfPkg/EmuVariableFvbRuntimeDxe/Fvb.inf {
+    <LibraryClasses>
+      PlatformFvbLib|OvmfPkg/Library/EmuVariableFvbLib/EmuVariableFvbLib.inf
+  }
+  MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
+  MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
   MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf
   MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
   MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 0a7894438d..a886a00d75 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -172,11 +172,13 @@ ReserveEmuVariableNvStore (
   //
   VariableStore =
     (EFI_PHYSICAL_ADDRESS)(UINTN)
-      AllocateRuntimePool (FixedPcdGet32(PcdVariableStoreSize));
+      AllocateRuntimePool (
+        2 * FixedPcdGet32(PcdFlashNvStorageFtwSpareSize)
+        );
   DEBUG ((EFI_D_INFO,
           "Reserved variable store memory: 0x%lX; size: %dkb\n",
           VariableStore,
-          FixedPcdGet32(PcdVariableStoreSize) / 1024
+          (2 * FixedPcdGet32(PcdFlashNvStorageFtwSpareSize)) / 1024
         ));
   PcdSet64 (PcdEmuVariableNvStoreReserved, VariableStore);
 }