Manual

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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 volume types
levels are all supported by ADM:
Non-RAID Volume Types
Single: Only uses a single disk in the creation of storage space. This configuration does not offer any
type of data protection.
JBOD: An acronym for “just a bunch of disks”, 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.
RAID Volume Types
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. Also, data in
RAID 0 volumes is accessed in parallel which provides improved performance. The downside is that
RAID 0 does not offer any sort of data protection.
RAID 1: In RAID 1 your data is written identically on two disks, thereby producing a “mirrored set”.
Exactly the same data is stored on the two disks at all times. RAID 1 protects your data from loss
should one of your disks fail. RAID 1’s advantage is that it offers protection for your data by
providing data redundancy. The downside of this configuration is that when combining two disks of
differing sizes, the total storage space will be equal to the size of the smaller disk. Therefore, you will
be unable to use a portion of the larger disk.
Total available storage space = (size of smaller disk) * (1)
RAID 5: Combines three or more disks to create a storage space that is able to support one failed
disk. Should one of your disks fail, your data will still be protected from loss. In the event of disk
failure, simply replace the failed disk with a new one. The new disk will automatically be
accommodated into the RAID 5 configuration. The advantage of using RAID 5 is that is that it
provides data protection through data redundancy. The downside to using RAID 5 is that when
combining disks of differing sizes, the total storage space will be calculated based on the size of the
smallest disk.
Total available storage space = (size of smallest disk) * (total number of disks – 1)