HP XP Racks User Manual
Page 115
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.
Displays operation mode of the external path.
Path Mode
•
Single: Ordinarily, only one external path is used even if alternate paths
are set, In Single mode, alternate paths are operated only in case of
maintenance work failure.
•
Multi: When alternate paths are set, external paths from several ports
are simultaneously used with load balancing.
•
ALUA: When alternate paths are set, external paths from several ports
are simultaneously used with load balancing. External paths connected
to ports in Passive status are not used.
Displays whether ALUA can be set as the Path Mode in the local storage
system.
ALUA Permitted
•
Enable: ALUA Mode is used.
•
Disable: ALUA Mode is not used.
Displays 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.
External volume’s MP blade IDs.
MP Blade ID
When clicked, the Change Setting dialog box opens.
Change Settings
When clicked, removes external volumes from the Selected External Volumes
table.
Remove
When clicked, the Edit SSIDs window opens and you can change the SSID
of the selected external volume. For information on the Edit SSIDs window,
Edit SSIDs*
see the HP XP7 Provisioning for Open Systems User Guide or the HP XP7
Provisioning for Mainframe Systems User Guide.
When clicked, the External LUN Properties window opens and you can
check the path details of the selected external volume.
Path Detail*
When clicked, the External LDEV Properties window opens and you can
check the details of the LDEV to be created from the selected external volume.
LDEV Detail*
* Appears when you click More Actions.
Add External Volumes wizard
115