Increasing the capacity of RAID5 by online gradual assimilation
Jose Luis Gonzalez-Compean, Toni Cortés · 2004
Disk arrays level 5 (RAID5) are very commonly used in many environments. This kind of arrays has the advantage of parallel access, fault tolerance and little waste of space for redundancy issues. Nevertheless, this kind of storage architecture has a problem when more disks have to be added to the array. Currently, there is no simple, efficient and on-line mechanism to add any number of new disks (not replacing them), and this is an important drawback in systems that cannot be stopped when the storage capacity needs to be increased.