manatee: Add new vdev to zpool

hosts/manatee/disk-config.nix

@@ -149,6 +149,39 @@
             };
           };
         };
+        disk3 = {
+          type = "disk";
+          device = "/dev/disk/by-id/ata-TOSHIBA_MG10ACA20TE_85K2A0UCF4MJ";
+          content = {
+            type = "gpt";
+            partitions = {
+              zfs = {
+                size = "100%";
+                content = {
+                  type = "zfs";
+                  pool = "storage";
+                };
+              };
+            };
+          };
+        };
+
+        disk4 = {
+          type = "disk";
+          device = "/dev/disk/by-id/ata-TOSHIBA_MG10ACA20TE_85K2A0V6F4MJ";
+          content = {
+            type = "gpt";
+            partitions = {
+              zfs = {
+                size = "100%";
+                content = {
+                  type = "zfs";
+                  pool = "storage";
+                };
+              };
+            };
+          };
+        };
       };
 
       zpool = {
@@ -166,6 +199,13 @@
                     "disk2"
                   ];
                 }
+                {
+                  mode = "mirror";
+                  members = [
+                    "disk3"
+                    "disk4"
+                  ];
+                }
               ];
             };
           };