Allocation of host memory buffer for sustained sequential writes

A data storage device, comprising:

• non-volatile memory including a plurality of storage locations;
• and
• a controller coupled to the non-volatile memory and configured to:
• receive successive write instructions from a host device;
• allocate host memory buffers (HMBs) in the host device for relocation data;
• retrieve the relocation data from the non-volatile memory to be stored in the HMBs, wherein an amount of the relocation data to be stored in the HMBs is an integer multiple of a width of a page or a meta-page including single-level cell (SLC) data in the non-volatile memory, and a capacity of relocation (RLC) buffers allocated in the HMBs for storage of the relocation data is based on the width of the page or the meta-page in the non-volatile memory;
• and
• write the relocation data from the RLC buffers in the HMBs while processing one or more of the successive write instructions.

A data storage apparatus, comprising:

• a volatile memory;
• a non-volatile memory including a plurality of memory locations;
• and
• a controller coupled to the non-volatile memory and the volatile memory and configured to:
• receive a plurality of sequential write operations from a host device;
• execute one of the plurality of sequential write operations to store data in one of the memory locations;
• and
• allocate, during execution of the one of the sequential write operations, relocation data in a first capacity to the volatile memory and in a second capacity to a host memory buffer (HMB) in the host device, wherein an amount of the relocation data allocated to the HMB is an integer multiple of a width of a page or a meta-page including single-level cell (SLC) data in the non-volatile memory, and a capacity of a relocation (RLC) buffer allocated in the HMB for storage of the relocation data is based on the width of the page or the meta-page in the non-volatile memory.