US 2021/0240627 A1 · DATA STORAGE APPRATUS AND OPERATING METHOD THEREOF

Abstract

A data storage apparatus includes storage divided into unit physical regions and having data stored therein, a buffer memory having buffer memory regions loaded with a map table comprising map data respectively indicating connection information between logical addresses of a host and start physical addresses for the unit physical regions, and a controller configured to: control data input and output to and from the storage according to a request of a host, to read, based on a map table address corresponding to a logical address included in the request, the map data for the logical address from the buffer memory, and to remap the map data by merging source map data of a buffer memory region having a number of errors equal to or greater than a threshold value with victim map data of a buffer memory region having a number of errors less than the threshold value.

Claims18

Dependent claims

A data storage apparatus comprising:

storage that is divided into unit physical regions of a first size and data is stored therein;
a buffer memory including a plurality of buffer memory regions and having a map table loaded in the plurality of buffer memory regions, the map table including a set of map data, each map data indicating connection information between a logical address of a host and a start physical addresses for a respective unit physical region;
and
a controller configured to:
control data input and output to and from the storage according to a request of the host,
is read, based on a map table address in which map data for a logical address requested to be accessed by the host is stored, map data from the buffer memory, and
remap the map data by merging source map data of a buffer memory region in which a number of occurrences of errors is equal to or greater than a first threshold value with victim map data of at least one buffer memory region in which the number of occurrences of errors is less than the first threshold value.

4 more elements

An operating method of a data storage apparatus which includes storage which is divided into unit physical regions of a first size and data is stored therein, a buffer memory including a plurality of buffer memory regions and having a map table loaded in the plurality of buffer memory regions, the map table including a set of map data, each map data indicating connection information between a logical address of a and a start physical address for a respective unit physical region, and a controller configured to control data input and output to and from the storage according to requests of a host, the method comprising:

receive a request including the logical address from the host,
read, by the controller and based on a map table address corresponding to the logical address, map data for the logical address from the buffer memory;
and
when a number of occurrences of errors of a buffer memory region in which the map data is stored is equal to or greater than a first threshold value, remapping, by the controller, the map data by merging source map data of the buffer memory region in which the number of occurrences of errors is equal to or greater than the first threshold value with victim map data of at least one buffer memory region in which the number of occurrences of errors is less than the first threshold value.

1 more element

Dependencies are inferred from the claim text.

Data storage appratus and operating method thereof

Life of this patent

Data storage appratus and operating method thereof

Life of this patent

Abstract

Claims18