User Guide

NOTE: Importing a Broken Mirror is the same as importing a Foreign configuration. See the

topic Importing Or Clearing Foreign Configurations Using The VD Mgmt Menu. The imported

VD is in a degraded state until the missing member is rebuilt.

Managing Preserved Cache

If a virtual disk becomes offline or is deleted because of missing physical disks, the controller preserves

the dirty cache from the virtual disk. The preserved dirty cache, known as pinned cache, is preserved until

you import the virtual disk or discard the cache.

NOTE: Certain operations, such as creating a new virtual disk, cannot be performed if preserved

cache exists. You have to enter the BIOS Configuration Utility (<Ctrl> <R>) to resolve the situation

before you boot to the operating system. Messages are displayed notifying you that you must enter

the BIOS Configuration Utility (<Ctrl> <R>) to discard the preserved cache or import the virtual

disks with the preserved cache.

CAUTION: If there are any foreign configurations, it is strongly advised that you import the

foreign configuration before you discard the preserved cache. Otherwise, you might lose data

that belongs with the foreign configuration.

Perform the following steps to select whether to import the virtual disk or discard the preserved cache:

1. On the VD Mgmt screen, click on a controller icon.

2. Press <F2> to display the available actions.

3. Select Manage Preserved Cache.

A message is displayed advising you to import the foreign configuration before you discard the

preserved cache to avoid losing data belonging to the foreign configuration. Confirm whether you

want to continue. The Manage Preserved Cache screen displays the affected virtual disks.

4. You can choose to discard the cache on the Manage Preserved Cache screen. If you press Cancel,

the process is cancelled and the Preserved Cache Retained dialog box is displayed.

If you choose to discard the cache, you are prompted to confirm your choice. If you choose to retain

the cache, a message is displayed to notify you that you cannot perform certain operations while the

cache exists. Click OK to continue.

Managing Dedicated Hot Spares

A dedicated hot spare automatically replaces a failed physical disk only in the selected disk group which

the hot spare is part of.

A dedicated hot spare is used before a global hot spare is used. You can create dedicated hot spares or

delete them on the VD Mgmt screen.

Perform the following steps to create or delete dedicated hot spares:

1. On the VD Mgmt screen, select Disk Group # and press <F2> to display the menu of available

actions.

The available menu options are displayed.

2. Select Manage Ded. HS and press <Enter>.

A screen displays a list of the current dedicated hot spares with an X beside them and the physical

disks that are available to create dedicated hot spares.

NOTE: The utility allows only disks of the same disk technology and of equal or greater size to

be selected as dedicated hot spare.

3. Use the following instructions to create or delete a dedicated hot spare:

• Creating a dedicated hot spare