HP XP P9000 External Storage for Open and Mainframe Systems User Guide (AV400-96599, January 2014)

DescriptionItem
Cache Mode
• Enable: Write data from the host is propagated asynchronously
• Disable: Write data from the host is propagated synchronously
See Cache use and external storage performance (page 14) for more
information.
Inflow Control
• Enable: Limits or prevents write data from being written to cache memory
when the write operation cannot be performed.
• Disable: Allows write data to be written to cache when the write
operation cannot be performed.
See Editing external volume policies (settings) (page 36) for more
information.
Select I/O load balance system for external storage system.Load Balance Mode
• Normal Round-robin: Performs load balance in round-robin system.
• Extended Round-robin: Load balance system is automatically switched
for sequential I/O and random I/O.
• Disable: Performs I/O operation with a single path, without load balance.
The default is the value set in the Edit Policies window.
If the product name of an external storage system is displayed as "(generic)",
Disable is used by default.
When the path mode of the external volume is Single, this item cannot be
selected.
Processor blade for the external volume.Processor Blade
• Range is from MPB0 to MPB7.
• Auto (default): Blade is automatically selected by the system.
• Blade with lowest number is used when Auto cannot be selected.
When clicked, moves selected volumes to the Selected External Volumes
list.
Add
Selected External Volumes
Displays selected external volumes.
Add External Volumes wizard 93