HP StorageWorks XP Remote Web Console Software User Manual
Page 89
CAUTION:
To set IO Suppression mode to Enable, Flex Copy must be installed.
•
Cache Mode
Specifies if the write I/O from the host is propagated synchronously or asynchronously to the ex-
ternal storage device (see
External LU attributes set by mapping
).
To propagate the write I/O from the host to the external array asynchronously, select Enable.
To propagate the write I/O from the host to the external array synchronously, select Disable.
Data that is not written by the host (for example, data written by XP Business Copy) is asynchron-
ously destaged to the external array regardless of the Cache Mode setting.
If you set the IO Suppression mode to Enable, Cache Mode becomes Disable.
CAUTION:
If you select Disable, XP Cache LUN's bind mode cannot be set.
•
Alternate Path
Number of alternate paths automatically set when mapped. Value can be from 0 to 7. Default is
1.
CAUTION:
If the specified number of alternate paths cannot be set, an error appears in the Preset list.
•
CLPR (see
External LU attributes set by mapping
)
When cache memory is partitioned using XP Disk/Cache Partition, you can select the CLPR used
to access the mapped volume from the list. The SLPR number that the selected CLPR belongs to
appears on the right of the list. However, if you select a mainframe emulation type in Emulation
Type, you can only select CLPRs belonging to SLPR number 0. The Limited check box appears on
the right of the SLPR number. To display only CUs defined for the selected SLPR, select the Limited
check box. To display all CUs, regardless of the SLPR, clear the check box. By default, the Limited
check box is selected.
•
Select Paths button
Displays the Select Paths pane (
). Use the Select Paths pane to select paths as candidates
for primary and alternate paths and select paths that cannot be set to primary and alternate paths.
By default, all paths with a confirmed connection status of normal are set as candidates for primary
and alternate paths. However, to set a specific path as the alternate path, use the Select Paths
pane to specify candidates for alternate paths. Alternate paths are automatically set from the
candidates, as many as the number set in Alternate Path.
CAUTION:
If you do not set alternate paths on the Select Paths pane, alternate paths are automatically set
according to the WWN selected in the Device tree on the LU Operation pane when you started
the Add LU operation.
•
Clear button
XP External Storage Software User Guide
89