|
1. An operating method of a memory controller included in a memory system including a memory having a memory array that is controlled by the memory controller, the operating method comprising: upon a determination that first redundancy parity data in the memory controller is to be backed up into the memory array, comparing a remaining capacity of a currently used backup region for storing redundancy parity data in the memory array with a required capacity of the first redundancy parity data to be backed up; in response to determining the remaining capacity of the currently used backup region is less than the required capacity, assigning an idle backup region in the memory array, as a backup region to be used; comparing a number of all backup regions for storing redundancy parity data in the memory array, including the backup region to be used, with a preset threshold; in response to determining the number is larger than the preset threshold, erasing backup regions having stored redundancy parity data in the memory array, and using a first backup mode to back up the first redundancy parity data in the memory controller into the backup region to be used; and in response to determining the number is equal to or less than the preset threshold, using a second backup mode to back up the first redundancy parity data in the memory controller into the backup region to be used, wherein the second backup mode is different from the first backup mode.
|
