diff --git a/pkg/config/config.go b/pkg/config/config.go
index 7a6f946..2fb19ff 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -12,7 +12,8 @@ import (
 )
 
 type Config struct {
-	Server *server.Config `yaml:"server"`
+	DataDir *string        `yaml:"data_dir,omitempty"`
+	Server  *server.Config `yaml:"server"`
 }
 
 const (
diff --git a/pkg/server/server.go b/pkg/server/server.go
index fe7b266..aa5d478 100644
--- a/pkg/server/server.go
+++ b/pkg/server/server.go
@@ -33,7 +33,10 @@ func (s *Server) installRoutes() {
 }
 
 func New(cfg *config.Config) (s *Server, err error) {
-	b := blas.New(cfg)
+	b, err := blas.New(cfg)
+	if err != nil {
+		return nil, err
+	}
 
 	s = &Server{
 		Blas: b,
diff --git a/pkg/storage/storage.go b/pkg/storage/storage.go
new file mode 100644
index 0000000..7e2cd13
--- /dev/null
+++ b/pkg/storage/storage.go
@@ -0,0 +1,28 @@
+package storage
+
+import (
+	"io/fs"
+)
+
+type Data interface {
+}
+
+type Item struct {
+	Version      int    `json:"version"`
+	MinorVersion *int   `json:"minor_version,omitempty"`
+	Key          string `json:"key"`
+	Data         Data   `json:"data"`
+}
+
+type Store struct {
+	fs.FS
+}
+
+func Open(dir fs.FS) (*Store, error) {
+	stor, err := fs.Sub(dir, ".storage")
+	if err != nil {
+		return nil, err
+	}
+
+	return &Store{stor}, nil
+}