Enantiomers or Diastereomers?
They are diastereomers.  Both of the "front" chiral carbons (the one with the bromine attached) are "S".  Rotate the one on the right 120 degrees CCW and it is identical to the one on the left.  But the "back" carbon (the one with the hydroxyl attached) is "S" on the left figure and "R" on the right figure - diastereomers.