diff --git a/cmd/frostfs-node/config.go b/cmd/frostfs-node/config.go
index 935aefe7f..45ddeec83 100644
--- a/cmd/frostfs-node/config.go
+++ b/cmd/frostfs-node/config.go
@@ -174,6 +174,7 @@ type subStorageCfg struct {
 	// blobovnicza-specific
 	size            uint64
 	width           uint64
+	leafWidth       uint64
 	openedCacheSize int
 }
 
@@ -288,6 +289,7 @@ func (a *applicationConfiguration) setShardStorageConfig(newConfig *shardCfg, ol
 			sCfg.size = sub.Size()
 			sCfg.depth = sub.ShallowDepth()
 			sCfg.width = sub.ShallowWidth()
+			sCfg.leafWidth = sub.LeafWidth()
 			sCfg.openedCacheSize = sub.OpenedCacheSize()
 		case fstree.Type:
 			sub := fstreeconfig.From((*config.Config)(storagesCfg[i]))
diff --git a/cmd/frostfs-node/config/engine/config_test.go b/cmd/frostfs-node/config/engine/config_test.go
index acf8c2a60..b8e95db6d 100644
--- a/cmd/frostfs-node/config/engine/config_test.go
+++ b/cmd/frostfs-node/config/engine/config_test.go
@@ -94,6 +94,7 @@ func TestEngineSection(t *testing.T) {
 				require.EqualValues(t, 1, blz.ShallowDepth())
 				require.EqualValues(t, 4, blz.ShallowWidth())
 				require.EqualValues(t, 50, blz.OpenedCacheSize())
+				require.EqualValues(t, 10, blz.LeafWidth())
 
 				require.Equal(t, "tmp/0/blob", ss[1].Path())
 				require.EqualValues(t, 0644, ss[1].Perm())
@@ -142,6 +143,7 @@ func TestEngineSection(t *testing.T) {
 				require.EqualValues(t, 1, blz.ShallowDepth())
 				require.EqualValues(t, 4, blz.ShallowWidth())
 				require.EqualValues(t, 50, blz.OpenedCacheSize())
+				require.EqualValues(t, 10, blz.LeafWidth())
 
 				require.Equal(t, "tmp/1/blob", ss[1].Path())
 				require.EqualValues(t, 0644, ss[1].Perm())
diff --git a/cmd/frostfs-node/config/engine/shard/blobstor/blobovnicza/config.go b/cmd/frostfs-node/config/engine/shard/blobstor/blobovnicza/config.go
index 5595f10bb..a780ea927 100644
--- a/cmd/frostfs-node/config/engine/shard/blobstor/blobovnicza/config.go
+++ b/cmd/frostfs-node/config/engine/shard/blobstor/blobovnicza/config.go
@@ -102,3 +102,13 @@ func (x *Config) OpenedCacheSize() int {
 func (x *Config) BoltDB() *boltdbconfig.Config {
 	return (*boltdbconfig.Config)(x)
 }
+
+// LeafWidth returns the value of "leaf_width" config parameter.
+//
+// Returns 0 if the value is not a positive number.
+func (x *Config) LeafWidth() uint64 {
+	return config.UintSafe(
+		(*config.Config)(x),
+		"leaf_width",
+	)
+}
diff --git a/config/example/node.env b/config/example/node.env
index 3abb744be..7ed818ef9 100644
--- a/config/example/node.env
+++ b/config/example/node.env
@@ -121,6 +121,7 @@ FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_SIZE=4194304
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_DEPTH=1
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_WIDTH=4
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_OPENED_CACHE_CAPACITY=50
+FROSTFS_STORAGE_SHARD_0_BLOBSTOR_0_LEAF_WIDTH=10
 ### FSTree config
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_1_TYPE=fstree
 FROSTFS_STORAGE_SHARD_0_BLOBSTOR_1_PATH=tmp/0/blob
@@ -167,6 +168,7 @@ FROSTFS_STORAGE_SHARD_1_BLOBSTOR_0_SIZE=4194304
 FROSTFS_STORAGE_SHARD_1_BLOBSTOR_0_DEPTH=1
 FROSTFS_STORAGE_SHARD_1_BLOBSTOR_0_WIDTH=4
 FROSTFS_STORAGE_SHARD_1_BLOBSTOR_0_OPENED_CACHE_CAPACITY=50
+FROSTFS_STORAGE_SHARD_1_BLOBSTOR_0_LEAF_WIDTH=10
 ### FSTree config
 FROSTFS_STORAGE_SHARD_1_BLOBSTOR_1_TYPE=fstree
 FROSTFS_STORAGE_SHARD_1_BLOBSTOR_1_PATH=tmp/1/blob
diff --git a/config/example/node.json b/config/example/node.json
index 6e995112e..a480c4a0e 100644
--- a/config/example/node.json
+++ b/config/example/node.json
@@ -168,7 +168,8 @@
             "size": 4194304,
             "depth": 1,
             "width": 4,
-            "opened_cache_capacity": 50
+            "opened_cache_capacity": 50,
+            "leaf_width": 10
           },
           {
             "type": "fstree",
@@ -218,7 +219,8 @@
             "size": 4194304,
             "depth": 1,
             "width": 4,
-            "opened_cache_capacity": 50
+            "opened_cache_capacity": 50,
+            "leaf_width": 10
           },
           {
             "type": "fstree",
diff --git a/config/example/node.yaml b/config/example/node.yaml
index acce3741a..39fb7714d 100644
--- a/config/example/node.yaml
+++ b/config/example/node.yaml
@@ -145,6 +145,7 @@ storage:
           depth: 1  # max depth of object tree storage in key-value DB
           width: 4   # max width of object tree storage in key-value DB
           opened_cache_capacity: 50  # maximum number of opened database files
+          leaf_width: 10 # max count of key-value DB on leafs of object tree storage
         - perm: 0644  # permissions for blobstor files(directories: +x for current user and group)
           depth: 5  # max depth of object tree storage in FS