Cisco Cisco Content Delivery Engine 220 Technical References
MegaRAID SAS Controller Replacement Procedure
OL-27138-01
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Replacement Preparations
Make sure you have received the new MegaRAID card (LSI MegaRAID 9261-8i). Ensure
that the BBU is either on the card or present in the box.
that the BBU is either on the card or present in the box.
Make sure you have downloaded the initrd.img installer which will install the new SAS
driver to support the new MegaRAID controller. This installer will need to be copied over
to the server that its MegaRAID controller will be replaced with the new one.
driver to support the new MegaRAID controller. This installer will need to be copied over
to the server that its MegaRAID controller will be replaced with the new one.
You will need a Keyboard and Monitor available for Upgrade procedure. Terminal
applications on an engineers’ computer may have different key maps to send key strokes
as required in the procedure. Example: in order to get in BIOS settings, you need to
send “Del” key during boot up. Having a Keyboard and monitor helps to ensure that you
do not run into key maps in your terminal software.
applications on an engineers’ computer may have different key maps to send key strokes
as required in the procedure. Example: in order to get in BIOS settings, you need to
send “Del” key during boot up. Having a Keyboard and monitor helps to ensure that you
do not run into key maps in your terminal software.
Cisco recommends performing a file system check with ‘fsck’ to detect any file system
errors that may have been caused by the old SAS adapter. Errors should be fixed prior to
replacing the SAS controller. Cisco
errors that may have been caused by the old SAS adapter. Errors should be fixed prior to
replacing the SAS controller. Cisco
clients’ field engineers will manage this additional
procedural step.
Cisco clients request that field engineers verify and correct if required the console
redirect and baud rate settings in the system BIOS. Procedure has been added to the
final reboot sequence.
redirect and baud rate settings in the system BIOS. Procedure has been added to the
final reboot sequence.
High-Level Procedure
The following is a high-level summary of the steps to be performed in this replacement
procedure. Utilize this summary to ensure that the MegaRAID controller replacement
operators are familiar with each step, the overall tasks and the procedures.
procedure. Utilize this summary to ensure that the MegaRAID controller replacement
operators are familiar with each step, the overall tasks and the procedures.
!!! WARNING !!!
NOTE 1:
One-by-one, execute each of the following steps on a single server following
the order listed below. When complete, repeat these steps on the next target
server.
NOTE 2:
It is very important to install the new initrd.img before physically replacing the
MegaRAID controller on the server running with 2.5.2 or earlier releases. The
new initrc.img has included the new SAS driver to support the new MegaRAID
controller. Without installing the initrc.img, the new MegaRAID controller
cannot be initialized; therefore, the logical drive (/dev/sda) will not be started
and the server will be booted to the OS Maintenance mode.
High-Level Summary of the Replacement Steps:
1. If the server is running with 2.5.2 or earlier releases, copy over the initrd.img installer
(cdstv_CSCtw94200.bin) to /root on the server.
Note: CDS-TV 2.5.3 or later version software includes the new initrc.img.
2. Execute the installer to install the new initrd.img file with the new SAS driver.
3. After executing the installer, verify the new initrd.img with the new SAS driver is placed
correctly.
4. Power off the server, disconnect the power cords from the power supplies, remove the