no swap or root in /etc/fstab?

ReadyNAS OS has a bit different system architecture than RAIDiator, using systemd instead of SysV-style init.

Bringing up the OS array (/dev/md0) is taken care of by the initrd process, but that's always been the case.
Management of the root mount point is taken care of by systemd.
So no need to have it wasting space in fstab.

Same story with the swap space (/dev/md1). What was once part of fstab is now integrated in to systemd.

The proper way to temporarily disable your swap would be to use systemctl:

### I'm on a fresh boot and swap has been setup and enabled.
root@nas-6E-3A-08:~# swapon -s
Filename                                Type            Size    Used    Priority
/dev/md1                                partition       2094844 0       -1

### systemd says swap is active. Your output may vary.
root@nas-6E-3A-08:~# systemctl status dev-md1.swap
dev-md1.swap - md1
          Loaded: loaded (/lib/systemd/system/dev-md1.swap; enabled)
          Active: active since Sun, 26 Oct 2014 10:56:02 -0700; 1min 41s ago
            What: /dev/md1
         Process: 4355 ExecDeactivate=/sbin/swapoff /dev/md1 (code=exited, status=0/SUCCESS)
         Process: 4366 ExecActivate=/sbin/swapon /dev/md1 (code=exited, status=0/SUCCESS)
          CGroup: name=systemd:/system/dev-md1.swap

### Temporarily stop the dev-md1.swap service, which deactivates swap.
root@nas-6E-3A-08:~# systemctl stop dev-md1.swap
root@nas-6E-3A-08:~# swapon -s
Filename                                Type            Size    Used    Priority

### Start the swap service, activating swap once more.
root@nas-6E-3A-08:~# systemctl start dev-md1.swap
root@nas-6E-3A-08:~# swapon -s
Filename                                Type            Size    Used    Priority
/dev/md1                                partition       2094844 0       -1