diff --git a/pkgs/os-specific/linux/mdadm/default.nix b/pkgs/os-specific/linux/mdadm/default.nix
new file mode 100644
index 000000000000..ab8c00968c21
--- /dev/null
+++ b/pkgs/os-specific/linux/mdadm/default.nix
@@ -0,0 +1,19 @@
+{stdenv, fetchurl, groff}:
+
+stdenv.mkDerivation {
+  name = "mdadm-2.6";
+  src = fetchurl {
+    url = http://www.cse.unsw.edu.au/~neilb/source/mdadm/mdadm-2.6.tgz;
+    md5 = "15019078eacc8c21eac7b0b7faf86129";
+  };
+
+  buildInputs = [groff];
+
+  preBuild = "
+    makeFlags=\"INSTALL=install BINDIR=$out/sbin MANDIR=$out/share/man\"
+  ";
+
+  meta = {
+    description = "Programs for managing RAID arrays under Linux";
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0e8920be4b02..d4c20a937bff 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2247,6 +2247,10 @@ rec {
     inherit fetchurl stdenv devicemapper;
   };
 
+  mdadm = import ../os-specific/linux/mdadm {
+    inherit fetchurl stdenv groff;
+  };
+
   mingetty = import ../os-specific/linux/mingetty {
     inherit fetchurl stdenv;
   };