diff --git a/pkg/daemon/ceph/client/filesystem.go b/pkg/daemon/ceph/client/filesystem.go
index 920506a3a..5cc2a3f4f 100644
--- a/pkg/daemon/ceph/client/filesystem.go
+++ b/pkg/daemon/ceph/client/filesystem.go
@@ -108,6 +108,17 @@ func GetFilesystem(context *clusterd.Context, clusterName string, fsName string)
 	return &fs, nil
 }
 
+// AllowStandbyReplay gets detailed status information about a Ceph filesystem.
+func AllowStandbyReplay(context *clusterd.Context, clusterName string, fsName string, allowStandbyReplay bool) error {
+	args := []string{"fs", "set", fsName, "allow_standby_replay", strconv.FormatBool(allowStandbyReplay)}
+	_, err := ExecuteCephCommand(context, clusterName, args)
+	if err != nil {
+		return fmt.Errorf("failed to set allow_standby_replay to filesystem %s: %+v", fsName, err)
+	}
+
+	return nil
+}
+
 // CreateFilesystem performs software configuration steps for Ceph to provide a new filesystem.
 func CreateFilesystem(context *clusterd.Context, clusterName, name, metadataPool string, dataPools []string) error {
 	if len(dataPools) == 0 {
diff --git a/pkg/operator/ceph/file/filesystem.go b/pkg/operator/ceph/file/filesystem.go
index 1fd444461..f01e58b80 100644
--- a/pkg/operator/ceph/file/filesystem.go
+++ b/pkg/operator/ceph/file/filesystem.go
@@ -73,6 +73,15 @@ func createFilesystem(
 		return fmt.Errorf("failed to get filesystem %s: %+v", fs.Name, err)
 	}
 
+	// As of Nautilus, allow_standby_replay is a fs property so we need to apply it
+	if cephv1.VersionAtLeast(clusterInfo.CephVersionName, cephv1.Nautilus) {
+		if fs.Spec.MetadataServer.ActiveStandby {
+			if err = client.AllowStandbyReplay(context, fs.Namespace, fs.Name, fs.Spec.MetadataServer.ActiveStandby); err != nil {
+				return fmt.Errorf("failed to set allow_standby_replay to filesystem %s: %v", fs.Name, err)
+			}
+		}
+	}
+
 	// set the number of active mds instances
 	if fs.Spec.MetadataServer.ActiveCount > 1 {
 		if err = client.SetNumMDSRanks(context, fs.Namespace, fs.Name, fs.Spec.MetadataServer.ActiveCount); err != nil {
diff --git a/pkg/operator/ceph/file/mds/spec.go b/pkg/operator/ceph/file/mds/spec.go
index 99fe32d28..7c0ed0894 100644
--- a/pkg/operator/ceph/file/mds/spec.go
+++ b/pkg/operator/ceph/file/mds/spec.go
@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"strconv"
 
+	cephv1 "github.com/rook/rook/pkg/apis/ceph.rook.io/v1"
 	"github.com/rook/rook/pkg/clusterd"
 	"github.com/rook/rook/pkg/operator/ceph/config"
 	opspec "github.com/rook/rook/pkg/operator/ceph/spec"
@@ -78,17 +79,25 @@ func (c *Cluster) makeDeployment(mdsConfig *mdsConfig) *apps.Deployment {
 }
 
 func (c *Cluster) makeMdsDaemonContainer(mdsConfig *mdsConfig) v1.Container {
-	return v1.Container{
+	args := append(
+		opspec.DaemonFlags(c.clusterInfo, config.MdsType, mdsConfig.DaemonID),
+		"--foreground",
+	)
+
+	// These flags are obsoleted as of Nautilus
+	if !cephv1.VersionAtLeast(c.cephVersion.Name, cephv1.Nautilus) {
+		args = append(
+			args,
+			config.NewFlag("mds-standby-for-fscid", c.fsID),
+			config.NewFlag("mds-standby-replay", strconv.FormatBool(c.fs.Spec.MetadataServer.ActiveStandby)))
+	}
+
+	container := v1.Container{
 		Name: "mds",
 		Command: []string{
 			"ceph-mds",
 		},
-		Args: append(
-			opspec.DaemonFlags(c.clusterInfo, config.MdsType, mdsConfig.DaemonID),
-			"--foreground",
-			config.NewFlag("mds-standby-for-fscid", c.fsID),
-			config.NewFlag("mds-standby-replay", strconv.FormatBool(c.fs.Spec.MetadataServer.ActiveStandby)),
-		),
+		Args:         args,
 		Image:        c.cephVersion.Image,
 		VolumeMounts: opspec.DaemonVolumeMounts(mdsConfig.DataPathMap, mdsConfig.ResourceName),
 		Env: append(
@@ -96,6 +105,8 @@ func (c *Cluster) makeMdsDaemonContainer(mdsConfig *mdsConfig) v1.Container {
 		),
 		Resources: c.fs.Spec.MetadataServer.Resources,
 	}
+
+	return container
 }
 
 func (c *Cluster) podLabels(mdsConfig *mdsConfig) map[string]string {