HP XP Business Copy Software - Manual (Page 77)

Table 34 Operations from the Host Servers during the Pairsplit Operation (continued)
Steady Split Quick Split Volumes Operations
Write operation for the area that is already copied to the S-VOL is performed
normally.
If the host server tries to write data to the area that is not copied yet, new data
will be written after the old data is copied to the S-VOL. P-VOL data during the
pairsplit operation will therefore be copied to the S-VOL for sure.
P-VOL Write
Cannot be written. Write
processing will finish
abnormally. The areas that are already copied can be
written as usual.
If the host server tries to write data to the area
that is not copied yet, firstly XP Business Copy
copies that area from the P-VOL, and then the
host server will write data to the area after the
copy operation completes. Therefore, the result
will be the same as when the host server writes
data to the area that is already copied.
S-VOL
•
The Select S-VOL box allows you to filter the S-VOLs displayed in the S-VOL List located on
the right.
◦ The Port list allows you to select the available S-VOLs by port.
◦ The Volume Type box:
The Internal VOL check box allows you to select the available S-VOLs that are internal
volumes.
The External VOL check box allows you to select the available S-VOLs that are external
volumes.
IMPORTANT:
You need the XP External Storage features to select the external volumes.
◦ The Attribute box allows you to select the available S-VOLs that are reserved when the
Reserved check box is selected, or those that are unreserved when the Not Reserved
check box is selected. The Attribute box also allows you to select available pairs that can
be set as L2 pairs when the Pair check box is selected.
The number of secondary volumes that can be displayed in the S-VOL List at a time is limited
to 1,024 volumes. In case the number of volumes defined in the storage system exceeds this
limit, use the Previous and Next buttons on the upper right of the S-VOL List to turn the pages
of the S-VOL List and see the entire list.
•
The Previous button allows you to return to the previous page of the S-VOL List. This button is
selectable only when the number of volumes defined in the storage system exceeds 1,024
volumes, which is the maximum number of volumes that can be displayed on one page. The
button is grayed out if the total number of volumes defined in the storage system is less than
1,024 volumes.
•
The Next button allows you to turn to the next page of the S-VOL List. This button is selectable
only when the number of volumes defined in the storage system exceeds 1,024 volumes,
which is the maximum number of volumes that can be displayed on one page. The button is
grayed out if the total number of volumes defined in the storage system is less than 1,024
volumes.
Splitting Pairs 77