Avago Technologies MegaRAID SAS 8204ELP - Manual (Page 31)

Summary of SAS RAID Controller Characteristics 1-15
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1.6.9 Drive Migration
Drive migration is the transfer of a set of hard drives in an existing
configuration from one controller to another. The drives must remain on
the same channel and must be reinstalled in the same order as in the
original configuration. The controller to which you migrate the drives
cannot have an existing configuration.
Note: Only complete configurations can be migrated; individual
virtual disks cannot be migrated.
Note: Drive roaming and drive migration cannot be supported at
the same time.
Follow these steps to migrate drives:
Step 1. Make sure that you clear the configuration on the system to
which you migrate the drives, to prevent a configuration data
mismatch between the hard drives and the NVRAM.
Note: When you migrate drives, move only the disks that make
up the virtual disk (not all of the physical disks in an array),
so you do not see an NVRAM mismatch error (providing a
configuration is on the destination controller). The NVRAM
mismatch error appears only if you move all of the physical
drives to the other controller.
Step 2. Turn off all power to the server and all hard drives, enclosures,
and system components. Disconnect power cords from the
systems.
Step 3. Open the host system by following the instructions in the host
system technical documentation.
Step 4. Either remove the SAS cable connectors from the internal
drives, or remove the shielded cables from the external drives
that you want to migrate.
a. Make sure that pin 1 on the cable matches pin 1 on the
connector.
b. Make sure that the SAS cables conform to all SAS
specifications.
Step 5. Remove the hard drives from the first system, and insert them
into drive bays on the second system.