HP XP Array Manager Software - Manual (Page 58)

Figure 18 Monitoring Options Window of Performance Monitor
.
To start monitoring, select Enable for the Current Status option in Monitoring Switch, and specify the
Gathering Interval option to set the interval for collecting information. Next, select or release the CUs
to be monitored in Monitoring Target area. You can specify target CUs either by choosing PG numbers,
LDKC numbers, CU numbers or the cells in the CU table. For the details on how to select CUs, see
“
Monitoring Options Window ” on page 52. After the setting is completed, select Apply button.
Performance Monitor starts to obtain statistics about the storage system and saves the statistics at the
specified interval.
If the number of CUs to be monitored is 64 or less, you can select a gathering interval between 1
and 15 minutes. The gathering interval you selected here determines the storing period of the statistics
in short range, which is up to 15 days. For example, if you specify the gathering interval as 1 minute,
the statistics can be stored 1 day, and if you specify it as 15 minutes, the statistics can be stored 15
days. If the number of the CUs to be monitored is 65 or more, you can choose the gathering interval
from among 5, 10 or 15 minutes. The gathering interval you selected determines the storing period
(between 8 hours and 1 day) of the statistics. In case of 510 CUs, for example, the statistics can be
stored for 8 hours if you specify the gathering interval to 5 minutes, and the statistics can be stored
for 5 days if the interval is specified to 15 minutes.
Moreover, the resource usage in the storage system can also be stored in a long range up to 3 months.
In this case, however, the gathering interval is fixed to 15 minutes regardless of the value set for the
Gathering Interval option. For details on the relationship of collection interval and storing period of
the statistics, see “
Monitoring Options Window ” on page 52.
The monitoring switch settings in the Monitoring Options window work in conjunction with the
monitoring switch settings in the Usage Monitor windows of XP Continuous Access, TrueCopy for
Mainframe, XP Continuous Access Journal, and Universal Replicator for Mainframe. Therefore, if you
use the Monitoring Options window to start or stop monitoring, or to change the gathering interval,
the monitoring settings of these remote copy functions will also change. Conversely, if the settings in
each Usage Monitor window are changed, the settings in the Monitoring Options window of
Performance Monitor will also change automatically.
Performance Monitor Operations 58