A first group of physical blocks of a memory system is assigned to a first group of a plurality of logical blocks. A second group of physical blocks of the memory system are identified at a location is that is based on an offset and the first group of physical blocks. The second group of physical blocks of the memory system are assigned to a second group of the plurality of logical blocks. A third group of physical blocks of the memory system are identified at a location that is based on the offset and the second group of physical blocks. The offset is used to identify the location of the third group of physical blocks relative to the location of the second group of physical blocks. The third group of physical blocks of the memory system are assigned to a third group of the plurality of logical blocks. Data is stored by using a system block with the assigned first group, the assigned second group, and the assigned third group of physical blocks.