{
  disko.devices = {
    disk = {
      data1 = {
        type = "disk";
        device = "/dev/vda";
        content = {
          type = "gpt";
          partitions = {
            ESP = {
              size = "64M";
              type = "EF00";
              content = {
                type = "filesystem";
                format = "vfat";
                mountpoint = "/boot";
                mountOptions = [ "umask=0077" ];
              };
            };
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      data2 = {
        type = "disk";
        device = "/dev/vdb";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      data3 = {
        type = "disk";
        device = "/dev/vdc";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      spare = {
        type = "disk";
        device = "/dev/vdd";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      log1 = {
        type = "disk";
        device = "/dev/vde";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      log2 = {
        type = "disk";
        device = "/dev/vdf";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      log3 = {
        type = "disk";
        device = "/dev/vdg";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      dedup1 = {
        type = "disk";
        device = "/dev/vdh";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      dedup2 = {
        type = "disk";
        device = "/dev/vdi";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      dedup3 = {
        type = "disk";
        device = "/dev/vdj";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      special1 = {
        type = "disk";
        device = "/dev/vdk";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      special2 = {
        type = "disk";
        device = "/dev/vdl";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      special3 = {
        type = "disk";
        device = "/dev/vdm";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
      cache = {
        type = "disk";
        device = "/dev/vdn";
        content = {
          type = "gpt";
          partitions = {
            zfs = {
              size = "100%";
              content = {
                type = "zfs";
                pool = "zroot";
              };
            };
          };
        };
      };
    };
    zpool = {
      zroot = {
        type = "zpool";
        mode = {
          topology = {
            type = "topology";
            vdev = [
              {
                # This syntax expects a disk called 'data1' with a gpt partition called 'zfs'.
                members = [ "data1" ];
                # It's also possible to use the full path of the device or partition
                # members = [ "/dev/disk/by-id/wwn-0x5000c500af8b2a14" ];
              }
              {
                mode = "mirror";
                members = [
                  "data2"
                  "data3"
                ];
              }
            ];
            spare = [ "spare" ];
            log = [
              {
                mode = "mirror";
                members = [
                  "log1"
                  "log2"
                ];
              }
              {
                members = [ "log3" ];
              }
            ];
            dedup = [
              {
                mode = "mirror";
                members = [
                  "dedup1"
                  "dedup2"
                ];
              }
              {
                members = [ "dedup3" ];
              }
            ];
            special = [
              {
                mode = "mirror";
                members = [
                  "special1"
                  "special2"
                ];
              }
              {
                members = [ "special3" ];
              }
            ];
            cache = [ "cache" ];
          };
        };

        rootFsOptions = {
          compression = "zstd";
          "com.sun:auto-snapshot" = "false";
        };
        mountpoint = "/";
        datasets = {
          # See examples/zfs.nix for more comprehensive usage.
          zfs_fs = {
            type = "zfs_fs";
            mountpoint = "/zfs_fs";
            options."com.sun:auto-snapshot" = "true";
          };
        };
      };
    };
  };
}