Step 2: Verifying Drive Migration Enable Settings; Step 3: Placing Drives Offline - IBM System Storage DCS Series Installation And Migration Manual

With gen2 controllers, hard disk drive and storage enclosure
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11. Ensure that the arrays and logical drives are in Optimal state before you start
the migration process. For more information, see "Bringing storage subsystems
and drive loops into optimal state" on page 11 section.
Note: An array must be in Optimal state before it can be moved. All failed
drives must be replaced and rebuilt into the array before it can be exported.
12. If you migrate storage enclosures from lower speed Fibre Channel
environment to a higher speed Fibre Channel environments, verify that the
Fibre Channel hard disk drives that you plan to migrate are each capable
operation and that you installed the latest firmware.
13. Save the storage subsystem profile of the target migration storage subsystem
in a location other than the logical drives that you plan to migrate.
14. If the migrated drives are FDE drives and were configured as part of secured
array, save the storage subsystem security (lock) key to unlock the drives after
you install them in a new storage subsystem. Without this key, the controllers
cannot unlock the drives to perform input and output processes. For details
about the security key, see the IBM System Storage DS Storage Manager Version
11.2 Installation and Host Support Guide.
15. If the migrated drives are from storage subsystems that operate in external
license key management mode, ensure that the new storage subsystem also
operates in external license key management mode and uses the same external
key server. Otherwise, save the storage subsystem security (lock) key to
unlock the drives.

Step 2: Verifying drive migration enable settings

Note: There is no need to verify drive migration enable settings in storage
subsystems or storage enclosures with controller firmware level 7.xx or later and
Storage Manager software version 10.xx or later.

Step 3: Placing drives offline

Place the arrays that are defined on the hard disk drives that you plan to migrate
in Offline state. Use the Export Array feature as described in this section.
The Export Array function is available on storage subsystems or storage enclosures
with controller firmware level 7.xx or later and Storage Manager software version
10.xx or later.
To export the drives, complete the following steps:
1. In the Storage Subsystem Management window, right-click the name of the
array that you want to migrate.
2. Select Advanced -> Export from the pull-down menu.
3. Read and complete each of the tasks listed in the Export Array window. Select
the check box next to each task after you complete it.
Note:
a. Selecting the check box beside each task does not automatically cause the
task to be completed. You must complete each task. Selecting the check box
helps you track the tasks that you complete and enables the Export button
on the Export Array window.
4. After you complete all tasks and select the check box beside each task, click
Export.
5. In the Export Array dialog window, type yes and click OK.
Chapter 2. Adding or migrating hard disk drives
17

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