diff --git a/master/chunk.go b/master/chunk.go
new file mode 100644
index 0000000..00798c9
--- /dev/null
+++ b/master/chunk.go
@@ -0,0 +1,18 @@
+package master
+
+import (
+	"pcloud/api"
+)
+
+type chunkServerStatus int
+
+const (
+	Healthy chunkServerStatus = iota
+	UNREACHABLE
+)
+
+type chunkServer struct {
+	address string
+	status  chunkServerStatus
+	chunks  map[string]api.ChunkStatus
+}