Lenovo ThinkServer RD240 MegaRAID SAS Software User Guide - Page 158

Viewing and Changing Battery Backup Unit Information, Make Global HSP, Make Dedicated HSP

Page 158 highlights

• Select Make Global HSP to make a global hot spare, available to all of the virtual drives. • Select Make Dedicated HSP to make a hot spare dedicated to a specific virtual drive. WebBIOS displays the global hot spare as Global and the dedicated hot spare as Ded. The icon for the dedicated hot spare displays under its associated virtual drive. The drive number, drive state, drive capacity, and drive manufacturer display. • Select Enclosure Affinity so if there are drive failures present on a split backplane configuration, then the hot spare will be used first on the backplane side that it resides in. • Select Prepare for Removal to prepare the drive for removal from the enclosure. The Prepare for Removal feature is different from spinning a drive down into powersave mode because it also involves flagging the drive as ready to remove. Therefore, if you choose to prepare a drive for removal, Ready to Remove displays in the device tree for that drive, instead of Powersave. 4.6.4 Viewing and Changing Battery Backup Unit Information If your SAS controller has a battery backup unit (BBU), you can view information about it and change some settings. To do this, follow these steps: 1. Click Controller Properties on the WebBIOS CU main menu screen. The first Controller Properties screen appears, as shown in Figure 4.52. 4-82 WebBIOS Configuration Utility

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4-82
WebBIOS Configuration Utility
Select
Make Global HSP
to make a global hot spare, available to all
of the virtual drives.
Select
Make Dedicated HSP
to make a hot spare dedicated to a
specific virtual drive.
WebBIOS displays the global hot spare as
Global
and the dedicated
hot spare as
Ded
. The icon for the dedicated hot spare displays under
its associated virtual drive. The drive number, drive state, drive
capacity, and drive manufacturer display.
Select
Enclosure Affinity
so if there are drive failures present on a
split backplane configuration, then the hot spare will be used first on
the backplane side that it resides in.
Select
Prepare for Removal
to prepare the drive for removal from
the enclosure.
The
Prepare for Removal
feature is different from spinning a drive
down into powersave mode because it also involves flagging the
drive as ready to remove. Therefore, if you choose to prepare a drive
for removal,
Ready to Remove
displays in the device tree for that
drive, instead of
Powersave
.
4.6.4
Viewing and Changing Battery Backup Unit Information
If your SAS controller has a battery backup unit (BBU), you can view
information about it and change some settings. To do this, follow these
steps:
1.
Click
Controller Properties
on the WebBIOS CU main menu
screen.
The first
Controller Properties
screen appears, as shown in
Figure 4.52
.