diff --git a/pkg/client/instances.go b/pkg/client/instances.go
index 2b7c199..c0e0334 100644
--- a/pkg/client/instances.go
+++ b/pkg/client/instances.go
@@ -7,6 +7,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"reflect"
+	"strings"
 
 	"github.com/antihax/optional"
 
@@ -469,3 +470,39 @@ func (a *InstancesAPIService) GetStorageVolTypeID(ctx context.Context, cloudID,
 
 	return StorageVol, err
 }
+
+func (a *InstancesAPIService) GetStorageControllerMount(ctx context.Context, instanceID int, controllerType string,
+	busNumber, unitNumber int) (ControllerMount string, err error) {
+	controllerTypeInput := strings.ToLower(controllerType)
+	if controllerTypeInput == "ide" {
+		controllerTypeInput = fmt.Sprintf("%s %d", controllerTypeInput, busNumber)
+	} else if controllerTypeInput == "scsi" {
+		controllerTypeInput = fmt.Sprintf("%s controller %d", controllerTypeInput, busNumber)
+	} else {
+		err = fmt.Errorf("invalid controller type '%s'", controllerType)
+		return
+	}
+	instanceResp, err := a.GetASpecificInstance(ctx, instanceID)
+	if err != nil {
+		return
+	}
+	if instanceResp.Instance.Controllers == nil {
+		err = fmt.Errorf("no storage controllers found in the instance response")
+		return
+	}
+	for _, controller := range instanceResp.Instance.Controllers {
+		controllerName := strings.TrimSpace(strings.ToLower(controller.Name))
+		if controllerName == controllerTypeInput {
+			if controller.MaxDevices <= unitNumber {
+				err = fmt.Errorf("max allowed devices exceed for controller '%s'", controllerTypeInput)
+				return
+			}
+			ControllerMount = fmt.Sprintf("%d:%d:%d:%d", controller.ID, busNumber, controller.Type.ID, unitNumber)
+			break
+		}
+	}
+	if ControllerMount == "" {
+		err = fmt.Errorf("storage controller '%s' not found", controllerTypeInput)
+	}
+	return
+}
diff --git a/pkg/models/instance_tf.go b/pkg/models/instance_tf.go
index edb7a24..bce23cc 100644
--- a/pkg/models/instance_tf.go
+++ b/pkg/models/instance_tf.go
@@ -26,6 +26,7 @@ type TFInstanceVolume struct {
 	ID          int    `tf:"id"`
 	Root        bool   `tf:"root"`
 	StorageType int    `tf:"storage_type"`
+	Controller  string `tf:"controller"`
 }
 
 type TFInstanceNetwork struct {
diff --git a/pkg/models/instances.go b/pkg/models/instances.go
index b9a832c..7396e0a 100644
--- a/pkg/models/instances.go
+++ b/pkg/models/instances.go
@@ -114,7 +114,8 @@ type CreateInstanceBodyVolumes struct {
 	Size        int    `json:"size,omitempty"`
 	StorageType int    `json:"storageType,omitempty"`
 	// The ID of the specific datastore. Auto selection can be specified as auto or autoCluster (for clusters).
-	DatastoreID interface{} `json:"datastoreId,omitempty"`
+	DatastoreID          interface{} `json:"datastoreId,omitempty"`
+	ControllerMountPoint string      `json:"controllerMountPoint,omitempty"`
 }
 
 type Instances struct {
@@ -176,6 +177,19 @@ type GetInstanceResponseInstance struct {
 	EnvironmentPrefix   string                                      `json:"environmentPrefix"`
 	InstanceContext     string                                      `json:"instanceContext"`
 	ContainerDetails    []GetInstanceContainer                      `json:"containerDetails"`
+	Controllers         []InstanceStorageController                 `json:"controllers,omitempty"`
+}
+
+type InstanceStorageController struct {
+	ID   int64  `json:"id"`
+	Name string `json:"name"`
+	Type struct {
+		ID   int    `json:"id"`
+		Code string `json:"code"`
+		Name string `json:"name"`
+	} `json:"type"`
+	MaxDevices         int `json:"maxDevices"`
+	ReservedUnitNumber int `json:"reservedUnitNumber"`
 }
 
 // GetInstanceResponseInstanceCloud
@@ -315,14 +329,15 @@ type GetInstanceResponseInstanceTenant struct {
 
 // GetInstanceResponseInstanceVolumes
 type GetInstanceResponseInstanceVolumes struct {
-	Size              int         `json:"size,omitempty"`
-	Name              string      `json:"name,omitempty"`
-	RootVolume        bool        `json:"rootVolume,omitempty"`
-	StorageType       int         `json:"storageType,omitempty"`
-	ID                int         `json:"id,omitempty"`
-	DatastoreID       interface{} `json:"datastoreId,omitempty"`
-	MaxStorage        float64     `json:"maxStorage,omitempty"`
-	DeviceDisplayName string      `json:"deviceDisplayName,omitempty"`
+	Size                 int         `json:"size,omitempty"`
+	Name                 string      `json:"name,omitempty"`
+	RootVolume           bool        `json:"rootVolume,omitempty"`
+	StorageType          int         `json:"storageType,omitempty"`
+	ID                   int         `json:"id,omitempty"`
+	DatastoreID          interface{} `json:"datastoreId,omitempty"`
+	MaxStorage           float64     `json:"maxStorage,omitempty"`
+	DeviceDisplayName    string      `json:"deviceDisplayName,omitempty"`
+	ControllerMountPoint string      `json:"controllerMountPoint,omitempty"`
 }
 
 // ResizeInstanceBody
@@ -346,13 +361,14 @@ type ResizeInstanceBodyInstancePlan struct {
 
 // ResizeInstanceBodyInstanceVolumes
 type ResizeInstanceBodyInstanceVolumes struct {
-	ID          json.Number `json:"id"`
-	RootVolume  bool        `json:"rootVolume"`
-	Name        string      `json:"name"`
-	Size        int         `json:"size"`
-	SizeID      interface{} `json:"sizeId,omitempty"`
-	StorageType interface{} `json:"storageType,omitempty"`
-	DatastoreID interface{} `json:"datastoreId,omitempty"`
+	ID                   json.Number `json:"id"`
+	RootVolume           bool        `json:"rootVolume"`
+	Name                 string      `json:"name"`
+	Size                 int         `json:"size"`
+	SizeID               interface{} `json:"sizeId,omitempty"`
+	StorageType          interface{} `json:"storageType,omitempty"`
+	DatastoreID          interface{} `json:"datastoreId,omitempty"`
+	ControllerMountPoint string      `json:"controllerMountPoint,omitempty"`
 }
 
 type ResizeInstanceResponse struct {
@@ -371,12 +387,13 @@ type ResizeInstanceResponseInstance struct {
 }
 
 type GetInstanceResposeResizeVolumes struct {
-	ID          json.Number `json:"id,omitempty"`
-	RootVolume  interface{} `json:"rootVolume,omitempty"`
-	Name        string      `json:"name,omitempty"`
-	Size        json.Number `json:"size,omitempty"`
-	StorageType json.Number `json:"storageType,omitempty"`
-	DatastoreID interface{} `json:"datastoreId,omitempty"`
+	ID                   json.Number `json:"id,omitempty"`
+	RootVolume           interface{} `json:"rootVolume,omitempty"`
+	Name                 string      `json:"name,omitempty"`
+	Size                 json.Number `json:"size,omitempty"`
+	StorageType          json.Number `json:"storageType,omitempty"`
+	DatastoreID          interface{} `json:"datastoreId,omitempty"`
+	ControllerMountPoint string      `json:"controllerMountPoint,omitempty"`
 }
 
 // SnapshotBody