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16 Cache LUN Introduction

Starting Cache LUN XP

1. Click Cache LUN in the left pane. The Cache LUN pane appears.

Figure 3 Cache LUN pane

Cache LUN pane

This pane lists the following items.

CLPR drop-down list

Use this drop-down list to select a cache logical partition (CLPR). The CLPR drop-down list displays the CLPR

number and CLPR name.

When you select a CLPR, volumes belonging to the selected CLPR and cache information appear in the

LDEV tree.

NOTE: If you administer only one CLPR, the CLPR drop-down list is not available.

Prestaging check box

Select or clear this check box to enable or disable the pre-staging function:

• If you select this check box, set the Prestaging Mode to Yes and click Apply. A non-pre-staging

operation will be performed and then a pre-staging operation will be performed.

• If you clear this check box and then click Apply, a non-pre-staging operation will be performed, but a

pre-staging operation will not be performed. If you select this check box later and then click Apply, only

a pre-staging operation will be performed.

When a pre-staging operation is in progress, the text Prestaging operation in progress is shown at the

bottom of the Cache LUN pane. The progress is displayed in percentage.

The Prestaging check box is enabled in Modify mode and is selected by default. However, the Prestaging

check box is disabled in either of the following conditions:

• No cache

• Prestaging mode is set to No for each cache

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Hp XP Cache LUN Software Manual de usuario Pagina 16