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The parity group icon (
group icon can also represent two or more parity groups that are
concatenated. If two or more parity groups are concatenated, volumes can
be striped across two or more drives. Therefore, concatenated parity
groups provide faster access (particularly, faster sequential access) to
data.
For example, if the parity group icon ( ) indicates a single parity group
, the text
3
indicates two or more parity groups that are connected together, all the
connected parity groups appear on the right of the icon. For example, if the
parity group
appears on the right of the parity group icon. (All the parity groups
connected with
Storage Navigator does not allow you to connect two or more parity
groups. If you want to use connected parity groups, contact the
maintenance personnel.
•
The list displays statistics about parity group usage, processor usage, etc.
The list displays up to a maximum of 4,096 resources at a time. If the
number of resources exceeds 4,096, use Previous and Next to display the
remaining resources. If you select connected parity groups in the tree, the
list displays usage statistics for all the connected parity groups.
If you select the Array Control Processor (ACP) folder in the tree, the list
displays a list of disk adapters (see the figure below), so that you are able
to confirm whether each disk adapter is located in Cluster-1 or Cluster-2.
For example, if the Cluster-1 column displays 0 and the Cluster-2 column
displays a hyphen, the disk adapter is located in Cluster-1.
Figure 4-3
When you click the parity group icon and the list displays the icon of
concatenated parity groups, the list only displays the ID of the parity
group at the top of the concatenated parity groups.
For details on the list contents, see Monitoring Resources in the Storage
System.
•
The Page area displays the number of the current page and the following
items are being used to change pages of list.
– Previous button allows you to display the previous 4,096 resources.
4-6
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
) can represent a single parity group. The parity
appears on the right of the icon. If the parity group icon
1-3
is connected with the parity group
1-3
are enclosed by square brackets).
1-3
List of Disk Adapters
Using the Performance Manager GUI
, the text
1-4
1-3[1-4]
1-
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