diff --git a/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/lifecycle/OntapPrimaryDatastoreLifecycle.java b/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/lifecycle/OntapPrimaryDatastoreLifecycle.java
index a206eaa053df..5ed07b424695 100755
--- a/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/lifecycle/OntapPrimaryDatastoreLifecycle.java
+++ b/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/lifecycle/OntapPrimaryDatastoreLifecycle.java
@@ -526,7 +526,27 @@ public boolean migrateToObjectStore(DataStore store) {
 
     @Override
     public void updateStoragePool(StoragePool storagePool, Map<String, String> details) {
-
+        long currentCapacityBytes = storagePool.getCapacityBytes();
+        long newCapacityBytes = Long.parseLong(details.get(PrimaryDataStoreLifeCycle.CAPACITY_BYTES));
+        Map<String, String> poolDetails = storagePoolDetailsDao.listDetailsKeyPairs(storagePool.getId());
+        StorageStrategy storageStrategy = OntapStorageUtils.getStrategyByStoragePoolDetails(poolDetails);
+
+        Volume volume = new Volume();
+        volume.setUuid(poolDetails.get(OntapStorageConstants.VOLUME_UUID));
+        volume.setName(poolDetails.get(OntapStorageConstants.VOLUME_NAME));
+        try {
+            if (volume.getUuid() == null || volume.getUuid().isEmpty() || volume.getName() == null || volume.getName().isEmpty()) {
+                logger.error("Volume UUID/Name not found in details for pool: {}, cannot resize", storagePool.getName());
+                throw new CloudRuntimeException("Volume UUID/Name not found in details, cannot resize ONTAP FlexVolume");
+            }
+            storageStrategy.updateStorageVolume(volume, newCapacityBytes);
+            logger.info("Successfully resized ONTAP FlexVolume '{}' (UUID: {}) for pool '{}' from {} bytes to {} bytes",
+                    volume.getName(), volume.getUuid(), storagePool.getName(), currentCapacityBytes, newCapacityBytes);
+        } catch (Exception e) {
+            logger.error(" Exception while resizing FlexVolume for pool: {}. Error: {}",
+                    storagePool.getName(), e.getMessage(), e);
+            throw new CloudRuntimeException("Failed to resize ONTAP FlexVolume for pool: " + storagePool.getName() + ". " + e.getMessage(), e);
+        }
     }
 
     @Override
diff --git a/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/service/StorageStrategy.java b/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/service/StorageStrategy.java
index 0ef295418118..cbb5c43d3779 100644
--- a/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/service/StorageStrategy.java
+++ b/plugins/storage/volume/ontap/src/main/java/org/apache/cloudstack/storage/service/StorageStrategy.java
@@ -367,11 +367,25 @@ public Volume createStorageVolume(String volumeName, Long size) {
      * @param volume the volume to update
      * @return the updated Volume object
      */
-    public Volume updateStorageVolume(Volume volume) {
-        return null;
+    public Volume updateStorageVolume(Volume volume, Long newSizeBytes) {
+        String authHeader = OntapStorageUtils.generateAuthHeader(storage.getUsername(), storage.getPassword());
+        Volume resizeRequest = new Volume();
+        resizeRequest.setSize(newSizeBytes);
+        try {
+            JobResponse jobResponse = volumeFeignClient.updateVolumeRebalancing(authHeader, volume.getUuid(), resizeRequest);
+            Boolean jobSucceeded = jobPollForSuccess(jobResponse.getJob().getUuid(), 10, 1000);
+            if (!jobSucceeded) {
+                logger.error("resize job failed for FlexVolume: " + volume.getName());
+                throw new CloudRuntimeException("resize job failed for FlexVolume: " + volume.getName());
+            }
+             logger.info("Volume is resized successfully for : " + volume.getName());
+        } catch (FeignException e) {
+            logger.error("Exception while resizing FlexVolume: " + volume.getName(), e);
+            throw new CloudRuntimeException("Failed to resize ONTAP FlexVolume: " + e.getMessage(), e);
+        }
+        return volume;
     }
-
-    /**
+            /**
      * Delete ONTAP Flex-Volume
      * Eligible only for Unified ONTAP storage
      * throw exception in case of disaggregated ONTAP storage
diff --git a/server/src/main/java/com/cloud/storage/StorageManagerImpl.java b/server/src/main/java/com/cloud/storage/StorageManagerImpl.java
index b25da50d4d92..d4a0c0fe83f2 100644
--- a/server/src/main/java/com/cloud/storage/StorageManagerImpl.java
+++ b/server/src/main/java/com/cloud/storage/StorageManagerImpl.java
@@ -1286,23 +1286,22 @@ public PrimaryDataStoreInfo updateStoragePool(UpdateStoragePoolCmd cmd) throws I
         }
 
         if (changes) {
-            StoragePoolVO storagePool = _storagePoolDao.findById(id);
-            DataStoreProvider dataStoreProvider = _dataStoreProviderMgr.getDataStoreProvider(storagePool.getStorageProviderName());
+            DataStoreProvider dataStoreProvider = _dataStoreProviderMgr.getDataStoreProvider(pool.getStorageProviderName());
             DataStoreLifeCycle dataStoreLifeCycle = dataStoreProvider.getDataStoreLifeCycle();
-
             if (dataStoreLifeCycle instanceof PrimaryDataStoreLifeCycle) {
                 if (updatedCapacityBytes != null) {
-                    details.put(PrimaryDataStoreLifeCycle.CAPACITY_BYTES, updatedCapacityBytes != null ? String.valueOf(updatedCapacityBytes) : null);
-                    _storagePoolDao.updateCapacityBytes(id, updatedCapacityBytes);
+                    details.put(PrimaryDataStoreLifeCycle.CAPACITY_BYTES, String.valueOf(updatedCapacityBytes));
+                    pool.setCapacityBytes(updatedCapacityBytes);
                 }
                 if (updatedCapacityIops != null) {
-                    details.put(PrimaryDataStoreLifeCycle.CAPACITY_IOPS, updatedCapacityIops != null ? String.valueOf(updatedCapacityIops) : null);
-                    _storagePoolDao.updateCapacityIops(id, updatedCapacityIops);
+                    details.put(PrimaryDataStoreLifeCycle.CAPACITY_IOPS, String.valueOf(updatedCapacityIops));
+                    pool.setCapacityIops(updatedCapacityIops);
                 }
                 if (cmd.getUrl() != null) {
                     details.put("url", cmd.getUrl());
                 }
-                _storagePoolDao.update(id, storagePool);
+                ((PrimaryDataStoreLifeCycle)dataStoreLifeCycle).updateStoragePool(pool, details);
+                _storagePoolDao.update(id, pool);
                 _storagePoolDao.updateDetails(id, details);
             }
         }