To delete one or more tc390 volume pairs – HP StorageWorks XP Remote Web Console Software User Manual
Page 138
138 Hitachi TrueCopy z/OS for HP XP12000/XP10000 and SVS 200 storage systems
When the status of the pair that is deleted is Simplex or Deleting, the default setting is Force (cannot be
changed). When the status of the pair is not Simplex or Deleting, the default setting is Normal.
•
Asynchronous Parameters, Delete Range: Select the TC390A delete range option. This option simplifies
disaster recovery operations for TC390A consistency groups at the RCU (secondary or remote disk
array).
The TC390 delete range options are:
• Group (MCU or RCU). When Group is selected, the MCU/RCU will delete all TC390A pairs in the
same consistency group as the specified pair regardless of pair status and consistency status.
CAUTION:
Do not use this option when deleting pairs at the RCU during disaster recovery. This
option is available only when one pair is selected.
• C/T (RCU only). When C/T is selected, the RCU will delete all TC390A pairs that have the same
consistency time.
• Volume (MCU or RCU). When Volume is selected, the MCU/RCU will delete only the specified
TC390A pair(s). This option can be used to remove individual volumes from consistency groups.
NOTE:
With the setting of Volume for Delete Range, if there are Duplex status pairs and pairs
other than Duplex status in the same consistency group, unexpected suspend may occur during the
pair operations (Suspend, Delete, and Resume) under the heavy I/O load conditions. You can
estimate whether the I/O load condition is heavy or not from the rate of sidefile cache (around
30%), or from the frequency of the host I/O if you cannot see the rate of sidefile cache. The pair
operations should be performed under the light I/O load condition.
The default settings are as follows:
• More than one pairs are selected: Volume.
• One pair is selected and the pair is M-VOL: Group.
• One pair is selected and the pair is R-VOL: C/T.
NOTE:
When an asynchronous pair is forcibly deleted, the TC390 delete range option must be
Group. Therefore, more than one pair cannot be forcibly deleted.
To delete one or more TC390 volume pairs:
1.
If you need to delete the volume pair(s) from the RCU to access the R-VOL(s) (for example, to perform
ICKDSF), connect to the MCU(s) and suspend the volume pair(s) first (see ”
” on page 131 for instructions).
2.
Connect to the MCU or RCU of the pair(s) to be deleted and start the TC390 software. If you plan to
use the TC390A C/T delete range option, you must connect to the RCU.
3.
From the CU Number tree on the TrueCopy main window, select the CU number of the correct CU
image.
4.
From the Volume list on the TrueCopy main window, select the TC390 volume pair(s) that you want to
delete. Select either TC390 Sync or Async pairs, but not both. If you plan to use the TC390A C/T or
Group delete range option, select only one TC390A pair in the group.
5.
Right-click to display the pop-up menu and click Delete Pair. The Delete Pair window is displayed.
6.
From the Delete Pair window, select the Delete Pair options for the selected pair(s), and click Set to
close the Delete Pair window and set the parameters. The list changes to the Pair Settings Parameter list
(Delete Pair). Repeat this step as needed to set Delete Pair options for the pair(s).
NOTE:
The options can be modified and/or canceled after you have set them. See ”