摘要:
Provided is a micro-journaling for a file system based on a non-volatile memory. A system includes a central processing unit (CPU), a main memory realized in a non-volatile memory, and a storage device. The file system resides in the non-volatile main memory, and micro-journaling is performed. The micro-journaling includes a commit operation for flushing data of a CPU cache to a user space, and a checkpoint operation performed per page unit while a file write operation is performed through a system call. Since the non-volatile main memory is capable of permanently storing data, a data double duplication process for reliability of the file system may be removed, and the file system is recovered from a sudden power-off of the system by using the micro-journaling for recording logging information while the file write operation is performed and checking a point.
摘要:
A computing system includes a host, at least one memory module connected with the host through a first channel, and at least one nonvolatile memory module connected with the host through a second channel. The host includes an encoder configured to encode packet data, and a memory module driver configured to transfer the encoded packet data to the at least one memory module when there is no need to decode the encoded packet data and to decode the encoded packet data using a decoder table when there is a need to decode the encoded packet data, the memory module transferring the decoded packet data to the at least one nonvolatile memory module.
摘要:
In a method of storing data in a storage device including a volatile memory device according to example embodiments, a swap address table containing address information about swap data are generated. The data are received from a host. Whether the received data are the swap data are determined based on the address information stored in the swap address table. The received data are selectively stored in the volatile memory device or in the nonvolatile memory device according to a result of the determination.
摘要:
A memory module for reporting information about a fail in chip units, an operation of a memory module, and an operation of a memory controller are provided. The memory module includes: first to Mth memory chips (where M is an integer that is equal to or greater than 2) mounted on a module board and storing data, and an (M+1)th memory chip mounted on the module board and storing a parity code for recovering data of a memory chip in which a fail in chip units occurs among the first to Mth memory chips, wherein fail bits are generated from the first to (M+1)th memory chips through an intra-chip error detection operation, and fail information is output according to a result of calculating the fail bits from the first to (M+1)th memory chips.
摘要:
A hybrid memory device includes a DRAM and a non-volatile memory. When a program is executed for the first time by a central processing unit (CPU), and data is copied to the DRAM from an external memory device, the data is also copied to the non-volatile memory. The non-volatile memory is configured to directly output data stored therein to an exterior without passing through the DRAM.