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MegaRAID SAS Software User Guide Chapter 10: Maintaining and Managing Storage Configurations
| Making a Drive Offline or
Missing
When the new drive spins up, the drive icon changes back to normal status, and the
rebuild process begins automatically. You can monitor the progress of the rebuild in
the Group Show Progress window by selecting Manage>Show Progress.
10.5 Making a Drive Offline or
Missing
If a drive is currently part of a redundant configuration and you want to use it in
another configuration, you can use MegaRAID Storage Manager commands to remove
the drive from the first configuration and change the drive state to Unconfigured Good.
CAUTION: After you perform this procedure, all data on that drive is lost.
To remove the drive from the configuration without harming the data on the virtual
drive, follow these steps:
1. In the MegaRAID Storage Manager main menu, click Go To>Physical Drive>Make
Drive (O)ffline.
The drive status changes to Offline.
2. Click Go To>Physical Drive>(M)ark Drive as Missing.
The drive status changes to Unconfigured Good.
CAUTION: After you perform this step, the data on this drive is no longer valid.
3. If necessary, create a hot spare drive for the virtual drive from which you have
removed the drive. (See Section8.3, Adding Hot Spare Drives.)
When a hot spare is available, the data on the virtual drive will be rebuilt. You can
now use the removed drive for another configuration.
CAUTION: If MegaRAID Storage Manager software detects that a drive in a virtual drive
has failed, it makes the drive offline. If this happens, you must remove the drive and
replace it. You cannot make the drive usable for another configuration by using the
Mark physical disk as missing and Rescan commands.
10.6 Upgrading the Firmware MegaRAID Storage Manager software enables you to easily upgrade the controller
firmware.
To avoid data loss because of dirty cache on the controller, the utility forces the virtual
disks into Write through mode after a firmware upgrade. It is in this mode until the
server reboots. In Write through mode, the controller sends a data transfer completion
signal to the host when the disk subsystem has received all the data in a transaction.
This way, in case of a power outage, the controller does not discard the dirty cache.
Follow these steps to upgrade the firmware:
1. In the MegaRAID Storage Manager main menu, click Go To>Controller>Update
Controller Firmware.
2. Click Browse to locate the .rom update file, as shown in Figure199.
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