Abstract: Aspects of the present invention disclose a method for a two-node storage system. The method includes one or more processors creating a plurality of first logic unit groups in a first storage node of a storage system. The method further includes mapping each of the plurality of first logic unit groups to a number of storage slices from different storage devices in the first storage node. The method further creating a plurality of second logic unit groups in a second storage node of the storage system, by mirroring storage slices from a storage device in the first storage node to multiple storage devices in the second storage node. In response to identifying a failure of a first storage device in the first storage node, the method further includes recovering lost data based on data in the second storage node.

Abstract: Embodiments of the present disclosure relate to a method for I/O data transmission in a Hyper-Converged Storage System (HCSS). The HCSS comprises at least one storage node having at least one device constructed with virtualization technology and a storage I/O processing module for accessing persistent storage resource of the HCSS. According to the method, an I/O request of a first type is received from the device by a System Disk front-end driver (SFD), wherein the I/O request of the first type is an I/O request to a system disk of the device. The I/O request of the first type and its corresponding response of a first type are transferred by the SFD between the device and the storage I/O processing module via a first shared memory, wherein the first shared memory is created by allocating a first memory region of the HCSS as the first shared memory.

Abstract: Aspects of the present invention disclose a method for a two-node storage system. The method includes one or more processors creating a plurality of first logic unit groups in a first storage node of a storage system. The method further includes mapping each of the plurality of first logic unit groups to a number of storage slices from different storage devices in the first storage node. The method further creating a plurality of second logic unit groups in a second storage node of the storage system, by mirroring storage slices from a storage device in the first storage node to multiple storage devices in the second storage node. In response to identifying a failure of a first storage device in the first storage node, the method further includes recovering lost data based on data in the second storage node.

Abstract: Provided is a method, system, and computer program product for managing requests received by a storage system. The method may include detecting, by one or more processors, a failure in a first storage system in response to a request to access data in the first storage system. The first storage system may include a primary storage for storing the data. A second storage system may be activated in response to the detected failure. The second storage system may include a first storage and a second storage. The first storage may include data synchronized with the primary storage of the first storage system. The second storage may be used to store data that corresponds to the request. The request may be managed using the second storage system.

Abstract: Provided is a method, system, and computer program product for managing requests received by a storage system. The method may include detecting, by one or more processors, a failure in a first storage system in response to a request to access data in the first storage system. The first storage system may include a primary storage for storing the data. A second storage system may be activated in response to the detected failure. The second storage system may include a first storage and a second storage. The first storage may include data synchronized with the primary storage of the first storage system. The second storage may be used to store data that corresponds to the request. The request may be managed using the second storage system.

Abstract: Embodiments of the present disclosure relate to a method for I/O data transmission in a Hyper-Converged Storage System (HCSS). The HCSS comprises at least one storage node having at least one device constructed with virtualization technology and a storage I/O processing module for accessing persistent storage resource of the HCSS. According to the method, an I/O request of a first type is received from the device by a System Disk front-end driver (SFD), wherein the I/O request of the first type is an I/O request to a system disk of the device. The I/O request of the first type and its corresponding response of a first type are transferred by the SFD between the device and the storage I/O processing module via a first shared memory, wherein the first shared memory is created by allocating a first memory region of the HCSS as the first shared memory.