Alternate Storage Arrangement in a Distributed Data Storage System with Key-Based Addressing

A computer program product comprising code embodied in a non-transitory storage medium, said code being executable on at least one processor causing the processor(s) for writing data from at least one client to a plurality of storage devices, said data being grouped as containers written by at least one writing entity within a corresponding one of a plurality of hosts, each container being identified by a unique key that is independent of physical storage identifiers and comprising a set of data chunks nominally designated for writing to different ones of the plurality of storage devices according to a layout pattern, said code further causing the processor(s):

• to detect inaccessibility of one of the plurality of storage devices in which data chunks are to be written;
• and
• for each container having a data chunk nominally designated for writing to the inaccessible storage device, to write the data chunk to an alternate one of the storage devices.

A data storage system comprising:

• a plurality of storage devices to which data is written by at least one writing entity within a corresponding one of a plurality of hosts, said data being grouped as containers, each container being identified by a unique key that is independent of physical storage identifiers and comprising a set of data chunks nominally designated for writing to different ones of the plurality of storage devices according to a layout pattern;
• at least one management component configured for detecting inaccessibility of one of the plurality of storage devices in which data chunks are to be written;
• and for each container having a data chunk nominally designated for writing to the inaccessible storage device, writing the data chunk to an alternate one of the storage devices.