Prevent disk hardware failure for cloud applications

A system for avoiding an interruption of services for a multi-tier application based on a probability of a disk failure, the system comprising:

• a memory;
• and
• at least one processor programmed to:
• assign a criticality factor value to a component of the multi-tier application;
• predict a disk failure probability value for a disk drive of a disk volume accessed by the component;
• in response to the disk failure probability value being above a predefined probability value for the disk drive of the disk volume accessed by the component and the assigned criticality factor value of the component being below a predefined criticality threshold value, mark the disk drive of the disk volume accessed by the component to be exchanged with another disk volume on another disk drive during a future maintenance cycle;
• and
• in response to the disk failure probability value being above the predefined probability value for the disk drive of the disk volume accessed by the component and the assigned criticality factor value of the component being equal to or above the predefined criticality threshold value, perform an immediate full copy of data of the disk volume relating to the disk drive with the disk failure probability value above the predefined probability value to a newly instantiated disk volume on another disk drive.

A computer program product for avoiding an interruption of services for a multi-tier application based on a probability of a disk failure, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, where the computer readable storage medium is not a transitory signal per se and where the program instructions when executed by one or more computing systems to cause the one or more computing systems to:

• assign a criticality factor value to a component of the multi-tier application;
• predict a disk failure probability value for a disk drive of a disk volume accessed by the component;
• in response to the disk failure probability value being above a predefined probability value for the disk drive of the disk volume accessed by the component and the assigned criticality factor value of the component being below a predefined criticality threshold value, mark the disk drive of the disk volume accessed by the component to be exchanged with another disk volume on another disk drive during a future maintenance cycle;
• and
• in response to the disk failure probability value being above the predefined probability value for the disk drive of the disk volume accessed by the component and the assigned criticality factor value of the component being equal to or above the predefined criticality threshold value, perform an immediate full copy of data of the disk volume relating to the disk drive with the disk failure probability value above the predefined probability value to a newly instantiated disk volume on another disk drive.