diff --git a/CHANGELOG.md b/CHANGELOG.md
index 846d254562..4da7006209 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ Changelog for NeoFS Node
 ### Added
 ### Changed
 ### Fixed
+- Open FSTree in sync mode by default (#1992)
+
 ### Removed
 ### Updated
 ### Updating from v0.34.0
diff --git a/cmd/neofs-node/config.go b/cmd/neofs-node/config.go
index 7ecdad3350..c36028c05d 100644
--- a/cmd/neofs-node/config.go
+++ b/cmd/neofs-node/config.go
@@ -155,10 +155,11 @@ func (c *shardCfg) id() string {
 
 type subStorageCfg struct {
 	// common for all storages
-	typ   string
-	path  string
-	perm  fs.FileMode
-	depth uint64
+	typ    string
+	path   string
+	perm   fs.FileMode
+	depth  uint64
+	noSync bool
 
 	// blobovnicza-specific
 	size            uint64
@@ -258,6 +259,7 @@ func (a *applicationConfiguration) readConfig(c *config.Config) error {
 			case fstree.Type:
 				sub := fstreeconfig.From((*config.Config)(storagesCfg[i]))
 				sCfg.depth = sub.Depth()
+				sCfg.noSync = sub.NoSync()
 			default:
 				return fmt.Errorf("invalid storage type: %s", storagesCfg[i].Type())
 			}
@@ -681,7 +683,8 @@ func (c *cfg) shardOpts() []shardOptsWithID {
 					Storage: fstree.New(
 						fstree.WithPath(sRead.path),
 						fstree.WithPerm(sRead.perm),
-						fstree.WithDepth(sRead.depth)),
+						fstree.WithDepth(sRead.depth),
+						fstree.WithNoSync(sRead.noSync)),
 					Policy: func(_ *objectSDK.Object, data []byte) bool {
 						return true
 					},
diff --git a/cmd/neofs-node/config/engine/config_test.go b/cmd/neofs-node/config/engine/config_test.go
index fa0f656d1d..2244472716 100644
--- a/cmd/neofs-node/config/engine/config_test.go
+++ b/cmd/neofs-node/config/engine/config_test.go
@@ -95,7 +95,10 @@ func TestEngineSection(t *testing.T) {
 
 				require.Equal(t, "tmp/0/blob", ss[1].Path())
 				require.EqualValues(t, 0644, ss[1].Perm())
-				require.EqualValues(t, 5, fstreeconfig.From((*config.Config)(ss[1])).Depth())
+
+				fst := fstreeconfig.From((*config.Config)(ss[1]))
+				require.EqualValues(t, 5, fst.Depth())
+				require.Equal(t, false, fst.NoSync())
 
 				require.EqualValues(t, 150, gc.RemoverBatchSize())
 				require.Equal(t, 2*time.Minute, gc.RemoverSleepInterval())
@@ -137,7 +140,10 @@ func TestEngineSection(t *testing.T) {
 
 				require.Equal(t, "tmp/1/blob", ss[1].Path())
 				require.EqualValues(t, 0644, ss[1].Perm())
-				require.EqualValues(t, 5, fstreeconfig.From((*config.Config)(ss[1])).Depth())
+
+				fst := fstreeconfig.From((*config.Config)(ss[1]))
+				require.EqualValues(t, 5, fst.Depth())
+				require.Equal(t, true, fst.NoSync())
 
 				require.EqualValues(t, 200, gc.RemoverBatchSize())
 				require.Equal(t, 5*time.Minute, gc.RemoverSleepInterval())
diff --git a/cmd/neofs-node/config/engine/shard/blobstor/fstree/config.go b/cmd/neofs-node/config/engine/shard/blobstor/fstree/config.go
index 8be8876cec..cf9df9020a 100644
--- a/cmd/neofs-node/config/engine/shard/blobstor/fstree/config.go
+++ b/cmd/neofs-node/config/engine/shard/blobstor/fstree/config.go
@@ -38,3 +38,10 @@ func (x *Config) Depth() uint64 {
 
 	return DepthDefault
 }
+
+// NoSync returns the value of "no_sync" config parameter.
+//
+// Returns false if the value is not a boolean or is missing.
+func (x *Config) NoSync() bool {
+	return config.BoolSafe((*config.Config)(x), "no_sync")
+}
diff --git a/config/example/node.env b/config/example/node.env
index e7c9cfab4f..e07b467eb8 100644
--- a/config/example/node.env
+++ b/config/example/node.env
@@ -160,6 +160,7 @@ NEOFS_STORAGE_SHARD_1_BLOBSTOR_0_OPENED_CACHE_CAPACITY=50
 NEOFS_STORAGE_SHARD_1_BLOBSTOR_1_TYPE=fstree
 NEOFS_STORAGE_SHARD_1_BLOBSTOR_1_PATH=tmp/1/blob
 NEOFS_STORAGE_SHARD_1_BLOBSTOR_1_PERM=0644
+NEOFS_STORAGE_SHARD_1_BLOBSTOR_1_NO_SYNC=true
 NEOFS_STORAGE_SHARD_1_BLOBSTOR_1_DEPTH=5
 ### Pilorama config
 NEOFS_STORAGE_SHARD_1_PILORAMA_PATH="tmp/1/blob/pilorama.db"
diff --git a/config/example/node.json b/config/example/node.json
index fa35fa2752..b7d127588e 100644
--- a/config/example/node.json
+++ b/config/example/node.json
@@ -214,6 +214,7 @@
           {
             "type": "fstree",
             "path": "tmp/1/blob",
+            "no_sync": true,
             "perm": "0644",
             "depth": 5
           }
diff --git a/config/example/node.yaml b/config/example/node.yaml
index 6a316e8353..e1a7fbf0e7 100644
--- a/config/example/node.yaml
+++ b/config/example/node.yaml
@@ -198,6 +198,7 @@ storage:
           path: tmp/1/blob/blobovnicza
         - type: fstree
           path: tmp/1/blob  # blobstor path
+          no_sync: true
 
       pilorama:
         path: tmp/1/blob/pilorama.db