388 IBM Midrange System Storage Hardware Guide
v. To migrate from an original storage subsystem controller with firmware Version 7.xx
or later to a new storage subsystem controller with firmware Version 6.xx or earlier,
the new storage subsystem controller firmware must be upgraded to Version 7.xx or
later before you perform the migration. You must purchase two additional drives and
a storage expansion enclosure to bring the new storage subsystem controller into
the Optimal state with drives attached before you can update the controller
firmware. If the upgrade of the new storage subsystem controller firmware to
Version 7.xx or later is not possible, the drives that are configured in the storage
subsystem with firmware Version 7.xx or later cannot be migrated into a storage
subsystem with controller firmware Version 6.xx or earlier.
c. Supported upgrades
i. Migrating from a configuration with an integrated drive/RAID controller DS4000
storage subsystem to one with the RAID controller only DS4000 storage subsystem
requires an additional storage expansion enclosure for the drives that are installed
in the integrated drive/RAID controller DS4000 storage subsystem chassis.
ii. Some storage subsystem models require that hard disk drives and drive expansion
enclosures operate at a specified Fibre Channel speed. Make sure that the hard
disk drive and drive expansion enclosures can operate at that speed before you
begin the upgrade.
7.5.1 Planning the upgrade
To plan the upgrade, perform the following steps:
1. Migrating from a DS4700 or DS4800 storage subsystem to a DS5100 or DS5300 storage
subsystem is supported. However, you must submit a RPQ with IBM to migrate any
EXP810 drive expansion enclosures connected to the existing DS4700 or DS4800
controller. You can submit an RPQ to your IBM marketing representative or authorized
reseller.
2. Purchase the premium feature entitlements that are enabled in the original storage
subsystem for the new storage subsystem, if that premium feature is not standard in the
new storage subsystem.
3. Purchase the host attachment entitlement kits for the new storage subsystem.
4. If you are migrating from a working DS4700 configuration, purchase an additional
EXP5000 drive expansion enclosure to install the hard disk drives in the internal bays of
the DS4700.
If there are enough empty drive bays in the existing EXP810 drive expansion enclosures,
you can move the drives in the original DS4700 enclosure to the empty drive bays.
5. Lay out the drive expansion enclosure cabling to the new storage subsystem. See the
documentation that comes with the new DS5000 storage subsystem for more information.
See the Installation, User’s, and Maintenance Guide, GC26-7798 for your storage
subsystem for information about the storage expansion enclosures cabling rules.
6. Purchase any additional hardware that is required to cable the existing drive expansion
enclosures to the new storage subsystem using the drive expansion enclosure cabling
layout as a guide.
7. Make sure that the original subsystem is in the Optimal state.
Note: Only EXP810 drive enclosures can be migrated from a DS4700 or DS4800
configuration into DS5100 or DS5300 configuration.
To Next Page
Loading...
Need help?
General