Selected external volumes – HP XP Racks User Manual
Page 113
Description
Item
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 42)
for more
information.
Select whether ALUA is used as the Path Mode. The default is Enable if
ALUA mode can be set as the Path Mode. Otherwise, the default is Disable.
Use ALUA as Path Mode
•
Enable: Enables ALUA mode.
•
Disable: Disables ALUA mode.
Select I/O load balance system for external storage system.
Load Balance Mode
•
Depend on the selected external volume(s): If Enable is set for ALUA
Settable on the external volume, Normal Round-robin is set for Load
Balance Mode automatically. If Disable is set for ALUA Settable, Disable
is set for Load Balance Mode automatically.
•
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)",
Depend on the selected external volume(s) is used by default.
This item cannot be selected when the path mode of the external volume is
Single or Disable is selected for Use ALUA as Path Mode.
MP blade for the external volume.
MP 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
113