JBOD is a combination of several physical disks into one logical volume, without division into partitions. In such configuration, disks can be filled with data in a sequence, from the first to the last, which means that failure of one disk does not necessarily cause loss of data from all other disks. However, in real life the file system may use any blocks available across the whole volume, so files can get fragmented and scattered all over different disks. The possibility of data recovery in such case depends on the algorithms used by the file system as well as the intensity of write operations, since these two factors determine the sequence in which the data is allocated. Another important factor is the ability to read file system metadata which is usually found on the first disk within the JBOD. Generally speaking, if one of the disks in such system fails, complete data recovery will be impossible without repairing such disk.