Storage system including nonvolatile memory module for converting random logical addresses to sequential logical addresses and operating method of the nonvolatile memory module

An operating method of a nonvolatile memory module, the nonvolatile memory module included in a host controlling a storage device, the method comprising:

• receiving a write request for first data corresponding to a first logical address;
• allocating a write buffer area of a given size to a memory device in response to the write request for the first data;
• converting the first logical address into a first device logical address;
• writing the first data in the write buffer area;
• receiving a write request for second data corresponding to a second logical address;
• converting the second logical address into a second device logical address based on the first device logical address and a size of the first data;
• and
• writing at least a portion of the second data in the write buffer area.

A storage system comprising:

• a host including
• a processor configured to cause the host to generate a first logical address corresponding to first data and a second logical address corresponding to second data, and
• a controller configured to cause the host to
• convert the first logical address into a first device logical address, and
• convert the second logical address into a second device logical address based on the first device logical address and a size of the first data;
• and
• a storage device including
• a nonvolatile memory device, and
• a storage controller configured to cause the storage device to
• store the first data in the nonvolatile memory device based on the first device logical address, and
• store the second data in the nonvolatile memory device based on the second device logical address.