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e. Remove the original storage subsystem enclosure from the rack.
f. Install the new storage subsystem enclosure in the rack, if you did not do so
in step 2a on page 47.
Note: See the documentation that comes with the storage subsystem for rack
installation instructions.
g. If the original storage subsystem is an integrated drive and controller model
and the new storage subsystem model contains the controllers only, install
any additional storage enclosures in the new storage subsystem and move
the drives from the original storage subsystem to the storage enclosure.
Note: If there are enough empty drive bays in the existing storage
enclosures, you can move the drives in the original integrated
drive-controller enclosure to the empty drive bays.
h. Insert the SFPs into the new storage subsystem drive loop/channel port
bays, and cable the storage enclosures to the new storage subsystem, using
the cabling layout that you defined in step 1e on page 46.
Note: The IBM service technician who performs the upgrade does not
recable the storage enclosures to meet the storage subsystem cabling
requirement or run new host connections. This is the responsibility of the
customer. The IBM service technician makes only host and drive channel
connections to the storage subsystem.
i. Insert the SFPs into the new storage subsystem host port bays, and cable the
host interface ports and the storage subsystem management ports of the new
storage subsystem enclosure.
j. Ensure that all of the storage enclosures are set to the same speed for each
drive channel/loop.
6. Preparing the new storage subsystem for use.
To prepare the new storage subsystem for use, complete the following steps:
a. If the controller TCP/IP addresses are assigned by using DHCP, update the
DHCP records with the new controller Ethernet port MAC addresses.
Note: The controllers first check for a DHCP server during the boot process.
If the controllers do not detect a DHCP server, they use either the static IP
address (if defined) or the default IP addresses. For more information about
changing the controller IP addresses, see the IBM System Storage DS Storage
Manager Installation and Support Guide. For updated documentation, go to
http://www.ibm.com/systems/support/storage/disk/.
b. If necessary, turn off the power to the storage enclosures. Do not turn off
the power to the new storage subsystem controller. Check the storage
enclosure LEDs to ensure that the storage enclosures are connected properly.
c. Turn off the power to the new storage subsystem controller.
Note: If the TCP/IP addresses of the Ethernet management ports are
statically defined for the original storage subsystem controllers, the TCP/IP
addresses are used for the same Ethernet management ports in the new
controllers. However, if all of the drives in the original storage subsystem
are secured FDE drives, the controllers are not able to read the configuration
data in the hard disk drives until they are unlocked. The statically defined
TCP/IP addresses that are stored in the hard disk drives are not available
until they are unlocked.
Chapter 4. Upgrading a storage subsystem controller
51
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