Abstract: A data storage method comprises storing first data in at least a first data chunk, wherein the first data chunk is a logical representation of one or more sectors on at least a first disk drive in a storage system; storing first metadata, associated with the first data, in at least a first appendix, wherein the first appendix is a logical representation of a sector region on at least the first disk drive in the storage system, and wherein the first metadata comprises first atomicity metadata (AMD) and first validity metadata (VMD) associated with the first data; and storing a copy of the first VMD for the first data in at least one low latency non-volatile storage (LLNVS) device.

Abstract: A data storage method comprises storing first data in at least a first data chunk, wherein the first data chunk is a logical representation of one or more sectors on at least a first disk drive in a storage system; storing first metadata, associated with the first data, in at least a first appendix, wherein the first appendix is a logical representation of a sector region on at least the first disk drive in the storage system, and wherein the first metadata comprises first atomicity metadata (AMD) and first validity metadata (VMD) associated with the first data; and storing a copy of the first VMD for the first data in at least one low latency non-volatile storage (LLNVS) device.

Abstract: Provided is a method, system, and program for initializing a storage device comprising multiple storage units through a storage controller. A request is received to initialize a storage space that spans the storage units. A determination is made of a layout of sets of sequential data blocks of the storage space on the storage units, wherein sets of sequential data blocks are written across the storage units. For each set of sequential data blocks, a determination is made of a block address in each storage unit where a first data block in the set of sequential data blocks will be written. A write command is generated for each of the storage units, wherein each write command indicates the determined block address for the storage unit and a block number. The write command is transmitted with one block of initialization data to the storage unit.

Abstract: Provided is a method, system, and program for initializing a storage device comprising multiple storage units through a storage controller. A request is received to initialize a storage space that spans the storage units. A determination is made of a layout of sets of sequential data blocks of the storage space on the storage units, wherein sets of sequential data blocks are written across the storage units. For each set of sequential data blocks, a determination is made of a block address in each storage unit where a first data block in the set of sequential data blocks will be written. A write command is generated for each of the storage units, wherein each write command indicates the determined block address for the storage unit and a block number. The write command is transmitted with one block of initialization data to the storage unit.