Memory management in a storage system

A tangible, non-transitory, computer-readable media having instructions thereupon which, when executed by a processor, cause the processor to:

• assign portions of an allocation unit to a plurality of data units in a storage system having solid-state memory, wherein the storage system is configured with data stripeshaving allocation units, and the allocation units have data units, and wherein each of the plurality of data units is to be mapped to the solid-state memory;
• assign a portion of the allocation unit to fill an instance of a required set of pages for writes that straddles a boundary between one data unit and another data unit, of the plurality of data units;
• and
• write the plurality of data units to the solid-state memory, in satisfaction of the required set of pages.

A storage system, comprising:

• solid-state memory;
• and
• one or more processors, to:
• configure the solid-state memory to hold data stripes having allocation units, the allocation units having data units, in a multilevel scheme of indirection and mapping, wherein the solid-state memory is subject to a required set of pages for writes to multilevel cell (MLC) memory having two or more bits per cell;
• assign data of an allocation unit to a plurality of data units to fill the plurality of data units including filling an instance of the required set of pages that straddles a boundary between one data unit and another data unit;
• and
• write the plurality of data units to the solid-state memory with each of the plurality of data units satisfying the required set of pages.