diff --git a/cmd/hive/cmd/service.go b/cmd/hive/cmd/service.go
index 55cc6c6c9..f8df69473 100644
--- a/cmd/hive/cmd/service.go
+++ b/cmd/hive/cmd/service.go
@@ -266,6 +266,12 @@ var viperblockStartCmd = &cobra.Command{
 			os.Exit(1)
 		}
 
+		// Resolve sharded WAL setting: default true unless explicitly set to false
+		shardWAL := true
+		if nodeConfig.Viperblock.ShardWAL != nil {
+			shardWAL = *nodeConfig.Viperblock.ShardWAL
+		}
+
 		service, err := service.New("viperblock", &viperblockd.Config{
 			NatsHost:   nodeConfig.NATS.Host,
 			PluginPath: pluginPath,
@@ -276,6 +282,7 @@ var viperblockStartCmd = &cobra.Command{
 			SecretKey:  nodeConfig.Predastore.SecretKey,
 			BaseDir:    nodeConfig.Predastore.BaseDir,
 			NodeName:   clusterConfig.Node,
+			ShardWAL:   shardWAL,
 		})
 
 		if err != nil {
diff --git a/cmd/hive/cmd/templates/hive.toml b/cmd/hive/cmd/templates/hive.toml
index 3214acf39..25af32add 100644
--- a/cmd/hive/cmd/templates/hive.toml
+++ b/cmd/hive/cmd/templates/hive.toml
@@ -36,6 +36,9 @@ token = "{{.NatsToken}}"
 
 [nodes.{{.Node}}.nats.sub]
 
+[nodes.{{.Node}}.viperblock]
+shardwal = true
+
 [nodes.{{.Node}}.predastore]
 host = "{{.BindIP}}:8443"
 region = "{{.Region}}"
diff --git a/go.mod b/go.mod
index 4f0ad3487..cc95453af 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	github.com/kdomanski/iso9660 v0.4.0
 	github.com/klauspost/cpuid/v2 v2.3.0
 	github.com/mulgadc/predastore v1.0.0
-	github.com/mulgadc/viperblock v1.0.10
+	github.com/mulgadc/viperblock v1.0.11
 	github.com/nats-io/nats-server/v2 v2.11.6
 	github.com/nats-io/nats.go v1.43.0
 	github.com/pelletier/go-toml/v2 v2.2.4
diff --git a/go.sum b/go.sum
index bd0d8f152..f84ed4749 100644
--- a/go.sum
+++ b/go.sum
@@ -276,6 +276,8 @@ github.com/mulgadc/predastore v1.0.0 h1:IZ5V/EL+k+zz0zGoTYp+1BgODb43JxHsb/kvORuy
 github.com/mulgadc/predastore v1.0.0/go.mod h1:x46A1z091hlZkMt3kkcuLSy2PAzSgROr6ft04qcYOU4=
 github.com/mulgadc/viperblock v1.0.10 h1:nQJGD44cQ6gW2oWt7IZGjovLNdhLpxjX+WO1EDT+lgY=
 github.com/mulgadc/viperblock v1.0.10/go.mod h1:1ZKEGGbjmiMi3rfmQ5jMZJB3gIws0pMnAreDbjoCodE=
+github.com/mulgadc/viperblock v1.0.11 h1:819xzoQ1DNbu/fz3flUSyu+A60WkfrfoYGPUo796ELU=
+github.com/mulgadc/viperblock v1.0.11/go.mod h1:dV1eRKaIjH8YfuCk2Bd4hxKd3Rx5mWfO6gelJ9SbbeY=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/nats-io/jwt/v2 v2.7.4 h1:jXFuDDxs/GQjGDZGhNgH4tXzSUK6WQi2rsj4xmsNOtI=
diff --git a/hive/config/config.go b/hive/config/config.go
index f79354058..500e83b6c 100644
--- a/hive/config/config.go
+++ b/hive/config/config.go
@@ -31,6 +31,7 @@ type Config struct {
 	Daemon     DaemonConfig     `mapstructure:"daemon"`
 	NATS       NATSConfig       `mapstructure:"nats"`
 	Predastore PredastoreConfig `mapstructure:"predastore"`
+	Viperblock ViperblockConfig `mapstructure:"viperblock"`
 	AWSGW      AWSGWConfig      `mapstructure:"awsgw"`
 
 	// Authentication
@@ -77,6 +78,10 @@ type AWSGWConfig struct {
 	ExpectedNodes int  `mapstructure:"expected_nodes"` // TODO: Replace with root cluster config
 }
 
+type ViperblockConfig struct {
+	ShardWAL *bool `mapstructure:"shardwal"` // Enable sharded WAL (default true when nil)
+}
+
 type PredastoreConfig struct {
 	Host      string `mapstructure:"host"`
 	Bucket    string `mapstructure:"bucket"`
diff --git a/hive/config/config_test.go b/hive/config/config_test.go
index 715e3b1f2..57c79f43d 100644
--- a/hive/config/config_test.go
+++ b/hive/config/config_test.go
@@ -263,3 +263,73 @@ func TestNBDTransportConstants(t *testing.T) {
 	assert.Equal(t, NBDTransport("socket"), NBDTransportSocket)
 	assert.Equal(t, NBDTransport("tcp"), NBDTransportTCP)
 }
+
+// Tests for ViperblockConfig
+
+func TestLoadConfig_ViperblockShardWAL_Explicit(t *testing.T) {
+	resetViper(t)
+	dir := t.TempDir()
+	path := filepath.Join(dir, "hive.toml")
+
+	toml := `
+node = "n1"
+
+[nodes.n1]
+region = "us-east-1"
+
+[nodes.n1.viperblock]
+shardwal = false
+`
+	require.NoError(t, os.WriteFile(path, []byte(toml), 0600))
+
+	cfg, err := LoadConfig(path)
+	require.NoError(t, err)
+
+	n := cfg.Nodes["n1"]
+	require.NotNil(t, n.Viperblock.ShardWAL, "ShardWAL should be set when explicitly configured")
+	assert.False(t, *n.Viperblock.ShardWAL)
+}
+
+func TestLoadConfig_ViperblockShardWAL_DefaultNil(t *testing.T) {
+	resetViper(t)
+	dir := t.TempDir()
+	path := filepath.Join(dir, "hive.toml")
+
+	toml := `
+node = "n1"
+
+[nodes.n1]
+region = "us-east-1"
+`
+	require.NoError(t, os.WriteFile(path, []byte(toml), 0600))
+
+	cfg, err := LoadConfig(path)
+	require.NoError(t, err)
+
+	n := cfg.Nodes["n1"]
+	assert.Nil(t, n.Viperblock.ShardWAL, "ShardWAL should be nil when not configured (defaults to true in service)")
+}
+
+func TestLoadConfig_ViperblockShardWAL_True(t *testing.T) {
+	resetViper(t)
+	dir := t.TempDir()
+	path := filepath.Join(dir, "hive.toml")
+
+	toml := `
+node = "n1"
+
+[nodes.n1]
+region = "us-east-1"
+
+[nodes.n1.viperblock]
+shardwal = true
+`
+	require.NoError(t, os.WriteFile(path, []byte(toml), 0600))
+
+	cfg, err := LoadConfig(path)
+	require.NoError(t, err)
+
+	n := cfg.Nodes["n1"]
+	require.NotNil(t, n.Viperblock.ShardWAL)
+	assert.True(t, *n.Viperblock.ShardWAL)
+}
diff --git a/hive/nbd/nbd.go b/hive/nbd/nbd.go
index 65938b7e0..709b08a24 100644
--- a/hive/nbd/nbd.go
+++ b/hive/nbd/nbd.go
@@ -23,7 +23,8 @@ type NBDKitConfig struct {
 	BaseDir    string `json:"base_dir"`
 	Host       string `json:"host"`
 	CacheSize  int    `json:"cache_size"`
-	UseTCP     bool   `json:"use_tcp"` // If true, use TCP transport; otherwise use Unix socket
+	ShardWAL   bool   `json:"shardwal"` // Enable sharded WAL (default true)
+	UseTCP     bool   `json:"use_tcp"`  // If true, use TCP transport; otherwise use Unix socket
 }
 
 func (cfg *NBDKitConfig) Execute() (*exec.Cmd, error) {
@@ -68,6 +69,7 @@ func (cfg *NBDKitConfig) Execute() (*exec.Cmd, error) {
 		fmt.Sprintf("base_dir=%s", cfg.BaseDir),
 		fmt.Sprintf("host=%s", cfg.Host),
 		fmt.Sprintf("cache_size=%d", cfg.CacheSize),
+		fmt.Sprintf("shardwal=%t", cfg.ShardWAL),
 	}
 
 	args = append(args, pluginArgs...)
diff --git a/hive/services/viperblockd/viperblockd.go b/hive/services/viperblockd/viperblockd.go
index 10e4e8c8a..3e10c1e6c 100644
--- a/hive/services/viperblockd/viperblockd.go
+++ b/hive/services/viperblockd/viperblockd.go
@@ -56,6 +56,9 @@ type Config struct {
 	// Socket is faster for local connections, TCP required for remote/DPU scenarios
 	NBDTransport config.NBDTransport
 
+	// ShardWAL enables sharded WAL for mounted volumes (default true)
+	ShardWAL bool
+
 	mu sync.Mutex
 }
 
@@ -155,6 +158,8 @@ func launchService(cfg *Config) (err error) {
 		return err
 	}
 
+	slog.Info("Viperblock config", "shardwal", cfg.ShardWAL)
+
 	if cfg.NodeName != "" {
 		slog.Info("Waiting for EBS events", "node", cfg.NodeName)
 	} else {
@@ -586,6 +591,7 @@ func launchService(cfg *Config) (err error) {
 			AccessKey:  cfg.AccessKey,
 			SecretKey:  cfg.SecretKey,
 			CacheSize:  nbdCacheSize,
+			ShardWAL:   cfg.ShardWAL,
 		}
 
 		// Create a unique error channel for this specific mount request