NAS520 HDD to HDD copy/sync

Dear all,

Is it possible to to copy/sync the data from a single HDD that is inserted in the NAS520 into the second HDD on the same NAS?  I've read the it's possible from USB to HDD (and vice-versa), however i'm wondering whether i can copy/sync HDD (volume 1) into HDD (volume 2). Currently one of the HDD's is almost full with data and i have inserted a second HDD that i would like to utilize in the future and looking for a way to copy/sync the data from HDD 1 into HDD2 directly from the NAS520. Is it possible to use only NAS in order to copy/sync that data from HDD 1 into HDD2 ?