ICP RS Series User Manual page 169

Remote mounted Cluster Drive
A Cluster Drive is a Host Drive on a clustering I/O channel.
This Host Drive is mounted on an ICP Controller in a different server.
Clustering means that two or more servers share resources. In case of one server failing
these resources move over to another valid server. The hard disks used for clustering are
physically not connected with just one ICP Controller, but with several ICP Controllers in
different servers (shared I/O channels).
Only one server can own a Host Drive at the same time, so a Host Drive configured for clus-
tering may either be controlled by the selected ICP Controller (i.e., local mounted) or by a
different ICP Controller (i.e., remote mounted).
You may only change the configuration of a local mounted Host Drive.
Private Host Drive belonging to another ICP Controller
This is a Host Drive on a clustering I/O channel.
This Host Drive is configured as a Private Host Drive and does not belong to the
selected ICP Controller.
Clustering means that two or more servers share resources. In case of one server failing
these resources move over to another valid server. The hard disks used for clustering are
physically not connected with just one ICP Controller, but with several ICP Controllers in
different servers (shared I/O channels).
Usually, when booting a cluster, the ICP Controller starting up first will gain control over all
Host Drives on the clustering I/O channels. If you want to be sure that a Host Drive is con-
trolled by a specific server, you may configure this Host Drive as a Private Host Drive. A Pri-
vate Host Drive cannot be used for clustering anymore.
Note: You cannot change the configuration of a Private Host Drive which is not property of
the selected ICP Controller. You have to use ICPCON to change its configuration.
A Private Host Drive belonging to the selected ICP Controller will be displayed like a nor-
mal Host Drive.
Array Drives
Array Drives or RAID drives consist of Logical Drives. They can be fault tolerant, depending
on the RAID level. The RAID level is displayed under the Array Drive icon.
Click on the icons to get more information on the different states of an array.
Icon Description
RAID 4/5/10
Idle
Build
Ready
Fail
Error
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Array Drive
Information
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