Sans Digial TowerSTOR TS25CT
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Sans Digital TowerSTOR TS25CT User Manual
Mirror (RAID 10) for High
Performance and High Security
RAID subsystem could be configured to
support Stripe and Mirror at the same time, i.e.
RAID 10. Take four hard drives in RAID 10 as
an example. Hard drive 0 and hard drive 1
could act as Mirror 1. Hard drive 2 and hard
drive 3 act as Mirror 1 too. The RAID controller
then configures these two Mirrors as Stripe.
At least two drives (either one in each Mirror)
can be allowed to fail without any impact to
RAID data access. If two drives from the same
Mirror are failed, the RAID data is not
accessible and becomes invalid.
CLONE
Clone’s action is similar to RAID 1.
However, all of the hard disks will be
the mirrors. For example, in a four hard
drives Clone environment, data in each
hard drive will be the same. This mode
is useful especially when users would
like to copy data from a hard drive to
several hard drives at the same time.
The number of allowed failed drives is
the total number of drives in the RAID
minus one.
Concatenating (Large)
This mode is also named “Large”. In this mode,
the RAID controller will concatenate all of the hard
drives into a single hard drive with larger capacity.
For example, if three 500GB hard disks are
connected to the RAID subsystem in Large Mode,
user will get a single hard disk with capacity of
1,500GB.
If any one hard disk gets defective, information
stored in this LARGE RAID will become invalid.
