HP XP P9500 Storage - Manual (Page 100)

Description Item
•
Disable: Performs I/O operation with a single path, without load balance.
•
A hyphen (-) displays when the Path mode is Single.
The value that is set for the selected external volume is used as the default.
If two or more external volumes with different values are selected, the item
is placed in non-selected status. When the Path Mode of the selected external
volume is Single, the item cannot be selected.
Confirm window
Description Item
Displays parity group numbers. Parity Group ID
External volume’s top LDEV ID. Top LDEV ID
External volume’s top LDEV name. Top LDEV Name
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.
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.
•
A hyphen (-) displays when the Path mode is Single.
100 External Storage GUI reference