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Appendix C
RAID Controller Considerations
Embedded RAID Controller
VMware ESX/ESXi or any other virtualized environments are not supported for use with the embedded
Note
MegaRAID controller. Hypervisors such as Hyper-V, Xen, or KVM are also not supported for use with
the embedded MegaRAID controller.
This server includes an embedded MegaRAID controller with two mini-SAS connectors on the
motherboard.
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You cannot downgrade from using a RAID controller card to using the embedded controller (see
Note
Controller Migration, page
controller in the BIOS are included here for those upgrading a server with no RAID controller or drives.
Data migration from SW RAID (embedded RAID) to HW RAID (a controller card) is not supported and
Caution
could result in data loss. Migrations from SW RAID to HW RAID are supported only before there is data
on the drives, or the case in which there are no drives in the server (see
page
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This section contains the following topics:
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OL-26646-01
The default setting for this embedded controller is RAID 0, 1, and 10 support for up to four SATA
drives.
You can upgrade this to support up to eight SAS drives (SAS RAID 0/1/10) by installing a Storage
Controller Unit (SCU) upgrade ROM chip on the motherboard. See
Module For Embedded RAID SAS Support, page
You can further upgrade to add SAS RAID 5 support with an optional software key. See
a Software RAID Key Module for Embedded RAID 5 Support, page
When you order the server with this controller, the controller is enabled in the BIOS. Instructions
for enabling the controller are included for the case in which a server is reset to defaults (Disabled).
See
Enabling the Embedded RAID Controller in the BIOS, page
C-4). Instructions for installing upgrade modules and enabling the embedded
C-4).
You can migrate from using the embedded controller to using a RAID card only before there is data
on the drives. In this case, you must disable the embedded controller. See
RAID Controller in the BIOS, page
The required drivers for this controller are already installed and ready to use with the LSI SWRAID
Configuration Utility. However, if you will use this controller with Windows or Linux, you must
download and install additional drivers for those operating systems. See
Drivers For Windows and Linux, page
Notes on Supported Embedded MegaRAID Levels, page C-6
Installing a SCU Upgrade ROM Module For Embedded RAID SAS Support, page C-7
Installing a Software RAID Key Module for Embedded RAID 5 Support, page C-8
Enabling the Embedded RAID Controller in the BIOS, page C-8
Disabling the Embedded RAID Controller in the BIOS, page C-9
Launching the LSI Embedded RAID Configuration Utility, page C-9
Installing LSI MegaSR Drivers For Windows and Linux, page C-9
C-7.
C-9.
C-9.
Cisco UCS C22 Server Installation and Service Guide
Embedded RAID Controller
Installing a SCU Upgrade ROM
Installing
C-8.
C-8.
RAID Controller Migration,
Disabling the Embedded
Installing LSI MegaSR
RAID
C-5
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