This section describes information and functions of volume where the user stores data.

• The LG NAS uses hard disks separated in 3 areas; System, Swap and User.
• The System is where the LG NAS firmware is installed with 2GB of space allocated.
• Swap is a virtual memory area to compensate shortage of memory. 256MB are allocated.
• The user composes the LG NAS volume and the remaining space is allocated. Total available space of the volume differs according to file system pattern and RAID level.

• Volume Array Configuration
• This page displays information pertaining to existing state and size of the volume of the LG NAS. Configuration is possible through the volume name, configuration disk, RAID level, volume state and capacity.
• 1) Name
• The name will be divided into a maximum of 4, i.e. Vol1 / Vol2 / Vol3 / Vol4. The check box on the left refers to the volume.
• 2) Disk
• The volume configuration will be divided into various hard disk locations and will be labeled B1 / B2 / B3 / B4. The configured volume via RAID will appear on a multitude of disks.
• 3) RAID
• The RAID level indicates NONE, JBOD, RAID0, RAID1, RAID5, RAID10.
• 4) Status
• The volume’s strange state and work are displayed. The volume’s state is divided into active / none / degraded / destroyed / formatting / synching / migrating.
• - ‘active’ refers to no abnormality in the volume,
• - ‘none’ refers to when no RAID is configured,
• - ‘degraded’ refers to configuration of the abnormal or deleted hard disk process, though volume is available for use,
• - ‘destroyed’ refers to configuration of the abnormal or deleted hard disk process, and volume is unavailable for use,
• - ‘formatting’ refers to the process of formatting the volume,
• - the ‘synching’ state refers to the RAID configuration process,
• - the ‘migrating’ state refers to the RAID reconfiguration process.
• 5) Capacity (Used/Total)
• The amount used and total capacity of volume are displayed. The percentage of capacity used (Used/Total) is indicated by the bar on left and full capacity (Total) is indicated by the bar on the right.
• Note 1) Total storage represents total available storage, which is defined by file system and RAID level. The ext3 file system of the LG NAS occupies 1.5% of the total HDD storage, thus the actual available storage in a volume is approximately 98.5% of the total user storage. When using one HDD per volume (single disk), the total storage is equal to the actual available storage of a HDD. The total storage of a RAID-based volume differs according to RAID level (JBOD / RAID0 / RAID1 / RAID5 / RAID10). For JBOD, the total available storage is the sum of the actual available storage of each HDD. For RAID0, the total available storage is the actual available storage of the smallest HDD multiplied by the number of HDDs. For RAID1, the total available storage is the actual available storage of the smallest HDD. For RAID5, the total available storage is the actual available storage of the smallest HDD multiplied by (the number of HDDs minus 1). For RAID10, which is composed of 5 HDDS, the total available storage is twice that of the actual available storage.
• Note 2) The represented size of the HDDs differs depending on manufacturer and OS. HDD manufacturers use an exponent of 1000 while OSs such as Microsoft Windows use exponents of 1024. The total available storage on the LG NAS is represented by the exponent 1024.
• Note 3) Volume storage of the LG NAS is the total HDD storage without the system area and the swapping area. If for example a volume is configured with a 1TB HDD, with 1x10^12 bytes of storage, user area will be as follows: 1x10^12 - 2x10^9 (system area) - 256x10^6 (swapping area) = 997744000000 bytes. This becomes 929Gb when converted using the exponent 1024.

• Volume create
• Clicking the ‘Create’ icon opens the create window and can create the volume determining the RAID level, and is also dependant on the number of selected HDDs. The LG NAS supports JBOD, RAID0, RAID1, RAID5, RAID10, and single disk. Select the optimum RAID level according to user's request. For a detailed explanation of the RAID configuration, refer to Appendix A.

• Deleting volumes
• Selecting the volume and clicking the ‘Delete’ icon will erase the volume. At this point the user data of the erased volume has been destroyed.

• Volume edit
• Selecting the volume and clicking the ‘Edit’ icon will correct the volume that is configured by RAID. Opening the edit box the HDD in the volume can be deleted or added. This function acts to reconfigure the volume in case of a malfunction in the HDD, or to increase the HDD capacity.
• Caution must be taken when editing; try to avoid data loss due to negligence.

• Volume expansion
• This function can increase the capacity preserving the data of the expanding volume. The volume capacity can be extended shifting to subsequent identical drives. This function is supported in the following volumes.
• - RAID1 expansion
• - RAID5 expansion
• - RAID10 expansion
• Performing another process during the volume configuration will retard processing.

• Volume Migration
• This function allows adding a new hard disk and hence migration to another RAID. This option is supported in the following drive configurations.
• - Migration of single disk to RAID1 or RAID5
• - Migration of RAID1 to RAID5
• - Migration of 3 RAID5 hard disks to 4 RAID5 disks
• Performing another process during the volume configuration will retard processing.