diff --git a/api/src/com/cloud/storage/Storage.java b/api/src/com/cloud/storage/Storage.java
index 25ae5ca4dc9..c94cefe732f 100644
--- a/api/src/com/cloud/storage/Storage.java
+++ b/api/src/com/cloud/storage/Storage.java
@@ -143,6 +143,10 @@ public class Storage {
         public boolean isShared() {
             return shared;
         }
+
+        public boolean supportsOverProvisioning() {
+            return this == StoragePoolType.NetworkFilesystem || this == StoragePoolType.VMFS || this == StoragePoolType.PreSetup;
+        }
     }
 
     public static List<StoragePoolType> getNonSharedStoragePoolTypes() {
diff --git a/server/src/com/cloud/configuration/ConfigurationManagerImpl.java b/server/src/com/cloud/configuration/ConfigurationManagerImpl.java
index 707adc4eab2..2a88b1ff60f 100644
--- a/server/src/com/cloud/configuration/ConfigurationManagerImpl.java
+++ b/server/src/com/cloud/configuration/ConfigurationManagerImpl.java
@@ -184,7 +184,6 @@ import com.cloud.service.dao.ServiceOfferingDao;
 import com.cloud.service.dao.ServiceOfferingDetailsDao;
 import com.cloud.storage.DiskOfferingVO;
 import com.cloud.storage.Storage.ProvisioningType;
-import com.cloud.storage.Storage.StoragePoolType;
 import com.cloud.storage.StorageManager;
 import com.cloud.storage.dao.DiskOfferingDao;
 import com.cloud.storage.dao.VolumeDao;
@@ -507,7 +506,7 @@ public class ConfigurationManagerImpl extends ManagerBase implements Configurati
                     throw new InvalidParameterValueException("unable to find storage pool by id " + resourceId);
                 }
                 if(name.equals(CapacityManager.StorageOverprovisioningFactor.key())) {
-                    if(pool.getPoolType() != StoragePoolType.NetworkFilesystem && pool.getPoolType() != StoragePoolType.VMFS) {
+                    if(!pool.getPoolType().supportsOverProvisioning() ) {
                         throw new InvalidParameterValueException("Unable to update  storage pool with id " + resourceId + ". Overprovision not supported for " + pool.getPoolType());
                     }
                 }
diff --git a/server/src/com/cloud/storage/StorageManagerImpl.java b/server/src/com/cloud/storage/StorageManagerImpl.java
index 5d1ee584ad4..93bcc82af1d 100644
--- a/server/src/com/cloud/storage/StorageManagerImpl.java
+++ b/server/src/com/cloud/storage/StorageManagerImpl.java
@@ -938,7 +938,7 @@ public class StorageManagerImpl extends ManagerBase implements StorageManager, C
         List<CapacityVO> capacities = _capacityDao.search(capacitySC, null);
 
         long totalOverProvCapacity;
-        if (storagePool.getPoolType() == StoragePoolType.NetworkFilesystem || storagePool.getPoolType() == StoragePoolType.VMFS) {
+        if (storagePool.getPoolType().supportsOverProvisioning()) {
             // All this is for the inaccuracy of floats for big number multiplication.
             BigDecimal overProvFactor = getStorageOverProvisioningFactor(storagePool.getId());
             totalOverProvCapacity = overProvFactor.multiply(new BigDecimal(storagePool.getCapacityBytes())).longValue();
@@ -1796,7 +1796,7 @@ public class StorageManagerImpl extends ManagerBase implements StorageManager, C
         }
 
         long totalOverProvCapacity;
-        if (pool.getPoolType() == StoragePoolType.NetworkFilesystem || pool.getPoolType() == StoragePoolType.VMFS || pool.getPoolType() == StoragePoolType.Filesystem) {
+        if (pool.getPoolType().supportsOverProvisioning()) {
             BigDecimal overProvFactor = getStorageOverProvisioningFactor(pool.getId());
             totalOverProvCapacity = overProvFactor.multiply(new BigDecimal(pool.getCapacityBytes())).longValue();
             s_logger.debug("Found storage pool " + poolVO.getName() + " of type " + pool.getPoolType().toString() + " with overprovisioning factor "