User guide

ASUSTOR NAS User Guide
Page 17 of 51
2.3. Storage Manager
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Note: This function may differ depending on the NAS model in use.
Storage space on your NAS consists of logical volumes which are made up of a single disk
or multiple disks combined together. Here you can set up new storage space for your NAS
and, according to your data protection needs, select the most suitable RAID level. In order
to maintain data integrity, you may only use internal disks when creating storage space
for your NAS. ADM does not support the use of external disks for storage space.
Reminder: The RAID levels that you may employ will depend on your NAS product
model and the number of disks that you are using.
When setting up new storage space, ADM offers the following two options:
 Quick Setup: You need only specify the requirements for the storage space (i.e., you
wish to have a higher level of data protection). Based on this and the number of disks
you have, ADM will automatically create a storage volume and select an appropriate
RAID level for it.
 Advanced Setup: Based on the current number of disks, you can manually select a
RAID level or set up a spare disk.
Reminder: In order to optimize disk space utilization, it is recommended that you
use disks of the same size when creating storage space.
About RAID
In order to provide optimal storage space utilization and data protection, ADM
supports multiple RAID levels allowing you to select the appropriate level for your
needs. The following RAID levels are all supported by ADM:
 Single: Only uses a single disk in the creation of storage space. This
configuration does not offer any type of data protection.
 JBOD: Uses a combination of two or more disks to create storage space. The
total storage capacity is the capacities of all the disks added together. The
advantage of this configuration is that it allows you to use different sized
disks together and provides a large amount of storage space. The downside
is that it does not offer any sort of data protection and has an access
efficiency lower than RAID 0.
 RAID 0: Uses a combination of two or more disks to create storage space.
The total storage capacity is the capacities of all the disks added together.
The advantage of this configuration is that it allows you to use different
sized disks together and provides a large amount of storage space. The
downside is that it does not offer any sort of data protection.
 RAID 1: In RAID 1 your data is written identically on two disks, thereby