Hitachi AMS2100 User Manual page 124

6-4
Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
•
NOTE: The LUN may be different from the volume's H-
LUN. Refer to
Windows on page 2-13
7. From the Data Pool Number drop-down list, select the data
pool, previously set up, that you want to assign to the pair.
8. Click the Advanced tab.
9. From the Copy Pace drop-down list, select the speed that copies
will be made. Copy pace is the speed at which a pair is created or
resynchronized. Select one of the following:
- Slow — The process takes longer when host I/O activity is
heavy. The time of copy or resync completion cannot be
guaranteed.
- Medium — (Recommended) The process is performed
continuously, but the time of completion cannot be
guaranteed. The pace differs depending on host I/O activity.
- Fast — The copy/resync process is performed continuously
and takes priority. Host I/O performance is restricted. The
time of copy/resync completion is guaranteed.
10. In the Group Assignment area, you have the option of
assigning the new pair to a consistency group. See
group (CTG) on page 1-6
following:
- If you do not want to assign the pair to a consistency group,
leave the Ungrouped button selected.
- To create a group and assign the new pair to it, click the
New or existing Group Number button and enter a new
number for the group in the box.
- To assign the pair to an existing group, enter the
consistency group number in the Group Number box, or
enter the group name in the Existing Group Name box.
NOTE: Add a Group Name for a consistency group as follows:
a. After completing the create pair procedure, on the
Pairs screen, check the box for the pair belonging to
the group.
b. Click the Edit Pair button.
c. On the Edit Pair screen, enter the Group Name then
click OK.
11. In the Split the pair... field, do one of the following:
- Click the Yes box to split the pair immediately. A snapshot
will be taken and the V-VOL will become a mirror image of
the P-VOL at the time of the split.
- Leave the Yes box unchecked to create the pair. The V-VOL
will stay up-to-date with the P-VOL until the pair is split.
Using SnapShot
Identifying P-VOL and V-VOL LUs on
to map LUN to H-LUN.
for a description. Do one of the
Consistency