HP XP7 Storage - Manual (Page 70)

4. For Remote Storage System, select the secondary system’s Model/Serial Number and Path
Group ID.
•
If the mirror contains an existing pair, the same Model/Serial Number as the existing
pair’s must be selected.
•
If the secondary system is XP24000/XP20000 Disk Array, only 0 can be selected for
Path Group ID.
5. In the Primary Volume Selection box, from Available LDEVs, select the volume to be the P-VOL.
6. In the Secondary Volume Selection box, for Base Secondary Volume, select the S-VOL’s CU
number and LDEV.
CAUTION: In XP24000/XP20000 Disk Array and P9500, LUN IDs display in hexadecimal
numbers. In XP7, LUN IDs display in decimal or hexadecimal numbers. If you have selected
the decimal notation, when assigning an S-VOL in a XP24000/XP20000 Disk Array or P9500
storage system, make sure to convert the hexadecimal LUN ID number to decimal.
7. For Selection Type, select the method for assigning S-VOLs when multiple primary volumes are
selected, Interval or Relative Primary Volume. See Prerequisite information for more information.
8. For Mirror Selection, specify the following:
1.
For Master Journal, select a number from the list of registered journal IDs. The list excludes
already-assigned master and restore journal IDs.
2. For Mirror ID, assign an identifier number for the mirror.
3. For Restore Journal, select a number from the list of registered journal IDs. All journal IDs
display (000-0FF).
9. Click Options to define the following optional settings:
1.
For Initial Copy Type, you can specify whether to copy data from P-VOL to S-VOL during
the operation.
- Entire Volume creates the pair and copies data to the S-VOL. (Default)
- None creates the pair but data is not copied to the S-VOL. This requires that data in the
P-VOL and S-VOL are already identical.
- Delta creates the pair for delta resync but data is not copied to the S-VOL.
2. For Initial Copy Priority, you can specify the scheduling order for this initial copy operation.
Range is 1 to 256; default is 32.
If a time out error occurs, the copy operation may not be executed in the order that you
set with Initial Copy Priority. The time out error may be caused by the CU configuration
or a remote copy path error. Review the error, release the pair with the error, and then
retry the Paircreate operation.
3. In the Error Level list, you can select one of the following system responses if a failure
occurs during this operation:
- Mirror, to split all pairs in the failed pair’s mirror. Mirror is the default.
- Volume, to split only the pair that failed.
4. In the CFW box, you can select one of the following to specify whether to copy
cache-fast-write data to the S-VOL or not:
- Primary Volume Only: Does not copy cache-fast-write data to the S-VOL (the default).
Note that if the P-VOL fails and the host attempts to read the same data from the S-VOL
when this option is used, I/O may end abnormally.
- Secondary Volume Copy: Copies cache-fast-write data to the S-VOL.
10. When ready, click Add. This moves the new pair to the Selected Pairs table. (You can remove
a volume by selecting it and clicking Remove).
70 Cnt Ac-J Z pair operations