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NAS System
68 User’s Manual
5.1 Volume Manager
The Volume Manager is responsible for disk and volume management.
A Volume Group consists of one or more disks that could be a RAID disk device or Raid
Set created using Raid Manager. The default proNAS Volume Group (proNASVG) must be
created first by joining at least one “New” or “Non_Initialized” disk to this volume group.
The proNASVG holds the NAS system configuration and the default system Logical
Volumes, such as home, public, proBackup Device, and proBackup Extended Device, as
well as user-defined Logical Volumes. Files and folders reside on these Logical Volumes.
The default proNASVG Volume Group cannot be deleted. When proNASVG is created, the
XFS file system is set in each default Logical Volume. XFS file system is also set in all
user-defined Logical Volumes. XFS is a high performance journaling file system and
provides better recovery time to repair a file system in case of FS damage. The proNAS
Volume Group will dynamically allocate some space from its assigned disks, and
allocation may fail if no more disk space is available. Therefore, make sure to regularly
monitor the available free space of proNAS Volume Group.
The Volume Manager can perform the following function:
 Create a VG (volume group)
 Join New Disks
 Reset a VG (volume group)
 Remove a VG (volume group)
 Create Logical Volume
 Create Snapshot
 Create Replication