Abstract: Embodiments of the present disclosure provide a method for a storage system, a storage system and a computer program product. The method comprises determining a first drive in a drive array is temporarily unavailable. The method further comprises setting the first drive in a frozen state. The method further comprises: in response to receiving a write request for the first drive during the frozen state, pending the write request or recording the write request in a second drive in the drive array. The method further comprises: in response to receiving a read request for the first drive during the frozen state, reconstructing data to which the read request is directed through data stored in a third drive in the drive array.

Abstract: Embodiments of the present disclosure provide a method of storage management and an electronic device. The method of storage management includes collecting information indicating an access error in an access path for accessing a storage device; performing a failure diagnosis on the access path based on the access error, the failure diagnosis including at least one of a first diagnosis related to a topology, a second diagnosis related to a history access error, or a third diagnosis related to a protocol; and providing an output related to health status of the access path based on the failure diagnosis.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for a virtual machine. The method implemented in a virtual machine comprises: receiving I/O requests for I/O operations on virtual disks of the virtual machine; detecting associations between the virtual disks and virtual storage devices of a virtual machine hypervisor for the virtual machine; and scheduling the I/O requests based on the associations. Embodiments of the present disclosure enable an application-aware I/O QoS in a virtual environment in an efficiently way and moving IT solutions of virtual version to different virtual platforms. The method and apparatus according to the embodiments of the present disclosure offer good flexibility and compatibility.

Abstract: Embodiments of the present disclosure provide a method of analyzing data in a storage system, a storage system, and a computer program product. The method includes: in response to detecting a request for a data analytic job, obtaining target data for the data analytic job from a first storage device of the storage system. The method also includes storing the target data into a second storage device of the storage system that is assigned for data analysis, and performing the data analytic job using a data processing device and the second storage device in the storage system.

Abstract: Embodiments of the present disclosure relate to a method and a device of managing input/output of a storage device. The storage device at least includes a first I/O port and a second I/O port. The method comprises receiving a first I/O request for the storage device, and determining a type of the first I/O request. Based on the type of the first I/O request, the first I/O request is dispatched to the first I/O port or the second I/O port. If the first I/O request is a read request, the first I/O request may be dispatched to the first I/O port, and if the first I/O request is determined as a write request, the first I/O request may be dispatched to the second I/O port. The method may reuse at least one of the first I/O port or the second I/O port.

Abstract: Embodiments are directed to a method of online storage device firmware upgrades by suspending input/output (I/O) operations to the storage device upon notification of a firmware upgrade to the storage device, maintaining a stripe log that contains data stripes updated by I/O operations issued to the storage device during suspension of the storage device, triggering the firmware upgrade to the storage device while the storage device is in suspension, reactivating the disk and new firmware upon completion of the firmware upgrade, and reconstructing the updated data stripes from the stripe log on the storage device after the reactivating step.

Abstract: Various embodiments of the present disclosure provide a method and apparatus for handling errors in a storage system. The method includes: determining configuration of a failed platform of a storage system; based on the determined configuration of the platform, determining policy for handling errors; and in response to detecting the errors, handling errors with the policy.

Abstract: Embodiments of the present disclosure provide a device for data backup comprising: a secondary backup device coupled to a primary backup device, the secondary backup device further comprising data segmentation unit operable to divide target data to be backed up into a plurality of data segments; data fingerprint generation unit operable to generate a corresponding data fingerprint for each data segment from a plurality of data segments, and providing the data fingerprint to the primary backup device for backing up the target data at the primary backup device, wherein the data fingerprint is a mapped data segment of a length less than a corresponding data segment length.

Abstract: Embodiments of the present disclosure relate to a method and an apparatus for backup communication. The method comprises: detecting a failure of a management interface between a processor and a baseboard management controller; in response to detecting the failure of the management interface, performing backup communication between the processor and the baseboard management controller using a control interface, wherein the baseboard management controller can obtain a physical parameter of the processor via the control interface; and transmitting a packet between the processor and the baseboard management controller via the control interface.

Abstract: Embodiments of the present disclosure provide methods and apparatus for path selection in a storage system. The storage system includes a plurality of storage devices, each storage device being connected to a plurality of different HBA ports of a server via a plurality of paths; the method comprises: monitoring a system-wide performance metric of the storage system to obtain dynamic performance statistics; detecting a performance-related event based on the dynamic performance statistics; and selecting, from the plurality of paths, an active path for a storage device of the plurality of storage devices based on the dynamic performance statistics and a result of the detecting. With the methods or apparatus according to the embodiments of the present disclosure, performance bottleneck can be avoided or timely eliminated, load balance can be achieved, and system resources can be utilized more effectively.

Abstract: Embodiments of the present disclosure provide a method and apparatus for simulating a slow storage disk. The method comprises: intercepting an input/output I/O command to be dispatched to a storage disk; and simulating the slow storage disk with the storage disk by injecting a delay to dispatch of the intercepted I/O command based on a predetermined delay injection policy.

Abstract: Embodiments of the present disclosure provide a system, a computer program product and a method for detecting and handling errors in a bus structure by obtaining error information from a plurality of hardware registers associated with a bus; in response to determining that a number of the errors in one or more hardware registers of the plurality of hardware registers exceeds a predetermined threshold, detecting performance of hardware devices corresponding to the one or more hardware registers; and in response to determining performance deterioration of one hardware device in the hardware devices corresponding to the one or more hardware registers, determining that an error occurs in the hardware device.

Abstract: Embodiments of the present invention provide a method, a computer program product and apparatus for disk data management, that includes comprises obtaining BMS data from a disk, determining a bad sector in the disk based on the BMS data, and recovering data stored in the determined bad sector.

Abstract: Embodiments of the present disclosure provide a method, a computer program product and an apparatus for determining a failure location in a storage system by obtaining performance information of a disk; in response to the performance information indicating that at least one or more performance indices exceed a corresponding predetermined threshold, determining whether a health condition of the disk is normal based on at least one or more performance indices; and in response to determining that the health condition of the disk is normal, determining a failure location based on the health condition information of at least one or more elements in a communication path of the disk, and it may be diagnosed whether a failure occurs to the disk per se or in its communication path, and before a potential failure occurs to the disk, it may also predict the failure thereby preventing data loss.

Abstract: Various embodiments of the present disclosure provide a method and apparatus for monitoring health condition of a hard disk by obtaining full-dimensional characteristics associated with the hard disk, wherein the full-dimension characteristics comprise at least two of: hard disk performance information, data integrity information, input/output I/O correctness information, and a hard disk Self-Monitoring Analysis and Reporting Technology S.M.A.R.T. report, and determining the health condition of the hard disk based on the full-dimension characteristics.