Patent ID: 11947400
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. The controller according to claim 1, wherein
the first circuit is further configured to:
manage an address translation table to conduct address translation from a logical address of data specified by the host to a physical address specifying a location of the nonvolatile memory in which the data is stored,
store, at a first timing, a snapshot of the address translation table into the nonvolatile memory,
store, at a second timing after the first timing, a log into the buffer, the log indicating a difference of the address translation table from the snapshot, and
in the case where the power becomes unsupplied from the external supply, by using the power stored in the battery,
write the log stored in the buffer into the nonvolatile memory.