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RDX QuikStation 4 and 8 Product Manual
5 - Logical Device Management
10400880-003
©2019-21 Overland-Tandberg
73
RDX Protected Volume
QuikStation 4.
The RDX Protected Volume combines up to four RDX cartridges into a single
protected volume target which continues to function even if one of the RDX cartridges fails.
This configuration allows you to manage a single protected volume comprised of one or more of
the RDX cartridges in your system with one-disk fault tolerance. The Protected Volume must
contain at least three disks.
QuikStation 8.
The RDX Protected Volume combines up to eight RDX cartridges into a single
protected volume target which continues to function even if two of the RDX cartridges fail.
This configuration allows you to manage a single protected volume comprised of four or more
of the RDX cartridges in your system with two-disk fault tolerance. In addition, the
QuikStation 8 also supports two four-disk Protected Volumes with one-disk fault tolerances.
An RDX Protected Volume may be presented to the host as either a fixed disk or as an RDX
device.
NOTE: Adding fault protection to a volume requires some data redundancy. The loss of storage
capacity may be roughly estimated as the capacity of the fault tolerated disks in the volume.
When creating an RDX Protected Volume the size of the available space is dependent on the
size of the smallest disk used to create the volume. It is strongly advised to use disks which
are all the same size to create the protected volume.
RDX Fixed Protected Volume
The Fixed Disk RDX Protected Volume is presented as fixed disk to the host computer. This
means that the host computer will not expect the disk to be removed. The user interface
software will not allow the protected volume to be ejected while it has an iSCSI connection to
a host.
The Fixed Disk RDX Protected Volume may have faster write times than the Removable Disk
RDX Protected Volume for some host operating systems.
In the QuikStation 8, you can configure two Fixed Disk RDX Protected Volumes with one-disk
fault tolerances. Each volume consists of up to four RDX cartridges either on the top or the
bottom row. In addition, you can configure a single Fixed Disk RDX Protected Volume with
two-disk fault tolerance consisting of up to eight RDX cartridges.
(QuikStation 4)