Why you should check out LVM

The easiest way to think of LVM is to picture a set of partitions or disks (one or many). These become your “physical volumes”. For a personal system, your physical volumes may comprise just one large partition on your drive. For a critical server at work, they may be a rack of disks, possibly configured as a RAID array. Using LVM, you can concatenate your physical volumes into what LVM calls a “volume group”. This volume group represents the disk space that is available to you for carving up into “logical volumes”. You might think of these logical volumes as virtual partitions that are created on your overall disk space, but without any particular need to resemble the geometry of those disks.