Hp XP Racks Manual do Utilizador descarregar pdf (Página 113)

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 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

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Hp XP Racks Manual do Utilizador Página 113