HP StorageWorks XP24000 Continuous Access Software User and Reference Guide, v01 (T5278-96002, June 2007)

Note: If # is added to the end of an LDEV number (for example, 00:3C#), the LD EV is an external
volume. For details on external volumes, see the H P StorageWorks XP24000 External Storage Software
User’s Guide.
MCU-RCU Path: Type of channel interface bet ween the storage systems (fibre).
Offloading Timer (sec.): Theamount oftimefor monitoring thetransferofdatatoasidefile. If the
CU type is RCU, this parameter is not displayed.
Inflow Control: Enable or disable the in flow control. If theCUtypeisRCU,thisparameter is notdisplayed.
Time Out (Copy Pending)(min.): Maximum delay allowed for a Continuous Access Asynchronous copy
(see “Changing the Consistency Group Options”onpage86).
Time Out (RCU Ready)(min.): Maximum delay allowed for re-establishing MCU-RCU communications
following a n MCU power-off (see “Changing the Consistency Group Options” on page 86). If the
CU type is RCU, this parameter is not displayed.
The Previous button displays status information for the consistency group number b efore the current
consistency group. The Next button displays status information for the CT group after the current
group. The Refresh button refreshes the status information. The Close button closes the CT Group Status
dialog box.
Deleting Co
nsistency Groups
A consisten
cy group can be deleted only from the MCU and only if the MCU does not contain any
P-VOLs stil
l
assigned to the group. Deleting a consistency group from an MCU does not affect the
consistency groups registered at other MCUs. The RCU will automatically delete a consistency group
when the last pair in the g roup is released.
The CT Group O perationÆDelete CT Group com m a nd allows you to delete a group from the current
MCU. The MC
U
will not allow you to delete a group which still has P-VOLs in the current MCU.
To delete o
ne or
more consistency groups from an MCU:
1. Make sure
that all
affected Continuous Access Asynchronous pairs have been released.
2. Select the LDKC where the desired consistency group belongs, or select Used from the tree in the
Asynchronous Operation tab to display the existing consistency groups in the list.
3. Select t
he
consistency group(s) that you want to delete. You can only delete consistency groups
from the
MCU
(This CU T ype =MCU).
4. Right-click the selected group(s), click CT Group Operation, a nd then click Delete CT Group.The
preview list displays the requested consistency group. If the Delete CT G roup command is not
enabled, one of the selected groups still contains P-VOLs in this MCU. The preview list displays
the
requested delete CT group operation(s) .
5. Verify the requested operation(s) displayed in the preview list. To remove one or more delete
group
operations, select the operation(s), right-click, and click Del ete.To cancel all operations,
select all the operations in the preview list, right-click, a nd click the Delete command, or click the
Cancel
button.
6. To de
lete the group(s), click the Apply button.
Usage Monitor Operations
The Usage M onitor window allows you to display a nd view the I/O statistics for all LDEVs to be monitored
on the
connected storage system.
TheI/O statistics arecollected by PerformanceMonitor. From the Usage Monitor window, you can
display and view only the data for the remote c opy. Up to 1,440 m onitoring data can be collected for
each LDEV at a sampling time interval specified by Performance Monitor, and up to 1,440 pieces of data
can
be collected for all the LD EVs to be monitored.
The usage monitor operations are:
•
Starting and stopping monitoring (see “Starting and Stopping Usage M onitoring” on page 90) ,
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