LVM allows combining disk or partition devices ("physical volumes") to form a virtual disk ("volume group"), which can then be divided into virtual partitions ("logical volumes"). Volume groups and logical volumes may span several physical disks. New physical volumes may be added to a volume group at any time, and logical volumes can be resized up to the amount of unallocated space in the volume group.
LVM yessirig asuddes n yiḍebsiyen neɣ n yibenkan n yiḥricen ("iblaɣen iɣaranen") i umsal n uḍebsi uhlis ("iblaɣen nugraw"), ara ttwabḍun mbeɛd ɣef yiḥricen uhlisen ("iblaɣen imeẓẓulen"). Igrawen iɣaranen zemren ad ttwernun ɣer ugraw n ubleɣ melmi i tebɣiḍ, ma d iblaɣen imeẓẓulen zemren ad tettubeddel teɣzi-nsen alamma d azal n tallunt ur nettuḥerr ara deg ugraw n ubleɣ.