User guide

ASUSTOR NAS User Guide
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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 – 2)
 RAID 10 (1+0): Combines four or more disk to create a storage space that
is able to support multiple failed disks (as long as the failed disks do not
belong to the same “mirrored set”). RAID 10 provides the data protection of
RAID 1 along with the access efficiency of RAID 0. With respect to data
protection, RAID 10 uses the RAID 1 method of having the exact same data
written identically on two disks, producing “mirrored sets”. These “mirrored
sets” are then combined together in a RAID 0 configuration. RAID 10
requires an even number of four or more disks. 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 / 2)
See More
NAS 251 – Introduction to RAID
NAS 352 – Online RAID Level Migration and Capacity Expansion
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Here you can check on the status of all your disks. You can also inspect their S.M.A.R.T.
information and conduct tests on your disks.
 S.M.A.R.T. Info: S.M.A.R.T. is an acronym for Self-Monitoring Analysis and
Report Technology. It is a type of self-monitoring mechanism for disks that
detects and reports on various indicators of reliability, with the hope of
anticipating failures.
 Disk Doctor: Here you can check your disks for bad sectors or conduct S.M.A.R.T.
tests.
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iSCSI is a type of network storage technology that offers high expandability and low
implementation costs. Through existing network infrastructure and iSCSI you can use your
NAS to expand existing storage space or have it act as a backup destination. iSCSI
consists of two ends, a target and an initiator. The initiator is used to search for iSCSI
hosts and to set up targets.
 IQN: IQN (iSCSI Qualified Name) is the unique name for each iSCSI target. This
name should not be the same as any of the other target IQNs on other hosts.