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About PERC 6 and CERC 6i Controllers 29
Compatibility With Virtual Disks Created on SAS 6/iR Controllers
The migration of virtual disks created on the SAS 6/iR family of controllers
can be migrated to PERC 6 and CERC 6i. However, only virtual disks with
boot volumes of the following Linux operating systems successfully boot after
migration:
• Red Hat Enterprise Linux 4 Update 5
• Red Hat Enterprise Linux 5
• SUSE Linux Enterprise Server 10 (64-bit)
NOTE: The migration of virtual disks with Microsoft Windows operating systems is
not supported.
NOTICE: Before migrating virtual disks, back up your data and ensure that the
firmware of both controllers is the latest revision. Also ensure that you use the
SAS 6 firmware version 00.25.41.00.06.22.01.00 or later version.
Migrating Virtual Disks from SAS 6/iR to PERC 6 and CERC 6i
NOTE: The supported operating systems listed above contain a driver for the
PERC 6 and CERC 6i controller family. No additional drivers are needed during the
migration process.
1
If virtual disks with one of the supported Linux operating systems listed
above are being migrated, open a command prompt and type the following
commands:
modprobe megaraid_sas
mkinitrd -f --preload megaraid_sas /boot/initrd-`uname
-r`.img `uname -r`
2
Turn off the system.
3
Move the appropriate physical disks from the SAS 6/iR controller to the
PERC 6 and CERC 6i. If you are replacing your SAS 6/iR controller with a
PERC 6, see the
Hardware Owner’s Manual
that came with your system.
CAUTION: After you have imported the foreign configuration on the PERC 6 or
CERC 6i storage controllers, you cannot migrate the storage disks back to the SAS
6/iR controller as it may result in the loss of data.
Dell_PERC6.1_UG.book Page 29 Wednesday, April 15, 2009 4:18 PM