HP Array Configuration Utility 34
Changing the Spare Activation Mode
The spare activation mode feature enables the controller firmware to activate a spare drive under the
following conditions:
•
When a data drive reports a predictive failure (SMART) status
•
When a data drive fails; this mode is the default.
In normal operations, and for older controllers, the firmware starts rebuilding a spare drive only when a data
drive fails. With the predictive failure activation mode, rebuilding can begin before the drive fails, reducing
the likelihood of data loss that could occur if an additional drive fails.
To change the Spare Activation Mode:
1.
Open ACU.
For more information, see "Using the ACU GUI (on page
19
)."
If ACU is already open, click the
Configuration
tab.
2.
Select a controller from the
Controller/Device
menu.
The
System Status
,
Systems And Devices
, and
Available Tasks
panels appear.
3.
In the
Available Tasks
panel, click
Modify Spare Activation Mode
.
4.
From the menu, select one of the following modes:
o
Failure Spare Activation
o
Predictive Spare Activation
5.
Click
Save
.
Changing the Spare Management mode
The Spare Management feature provides multiple methods for handling spare behavior. You can choose
from the following options:
•
Dedicated
– The failed data drive, when replaced, must be rebuilt from the data on the spare drive. In
Dedicated mode, one spare can be dedicated to multiple arrays.
•
Auto-Replace Drives
– The spare for the failed data drive automatically becomes the replacement data
drive. When the spare is replaced, the data drive does not need to be rebuilt. In Auto-replace mode,
spare drives cannot be shared between arrays.
If assigning
Auto-Replace Drives
mode to an array with a RAID 0 drive,
Spare Activation Mode
must be set
to
Predictive Spare Activation
mode.
To change the Spare Management mode:
1.
Open ACU.
For more information, see "Using the ACU GUI (on page
19
)."
If ACU is already open, click the
Configuration
tab.
2.
Select a controller from the
Controller/Device
menu.
The
System Status
,
Systems And Devices
, and
Available Tasks
panels appear.
3.
In the
Available Tasks
panel, click
Spare Management
.
4.
From the menu, select one of the following modes:
o
Dedicated
o
Auto-Replace Drives
