Chapter 7. Advanced maintenance, troubleshooting, and diagnostics 389
8. Perform a full backup of the original storage subsystem and schedule it for down time.
9. Retrieve the proofs of purchase for both the original and new storage subsystems and for
any additional premium feature entitlements on the new and original storage subsystems.
10.If there are any switch zoning definitions or applications that rely on the storage subsystem
worldwide names, plan to update them to use the new storage subsystem worldwide
names after the migration to the new storage subsystem is complete.
7.5.2 Preparing the new storage subsystem
To prepare the new storage subsystem for the upgrade, perform the following steps:
1. Unpack the new DS5000 storage subsystem and install it in a rack. Do not connect it to
the drive expansion enclosures attached to the original DS4700 or DS4800 storage
subsystem.
2. Connect the new storage subsystem to the systems-management network using the
default IP addresses of the controllers and record the version of the controller firmware on
the new storage subsystem.
The default TCP/IP address of controller A Ethernet port 1 is 192.168.128.101 and the
default TCP/IP address of controller A Ethernet port 2 is 192.168.129.101.
The default TCP/IP address of controller B Ethernet port 1 is 192.168.128.102 and the
default TCP/IP address of controller B Ethernet port 2 is 192.168.129.102.
7.5.3 Preparing the original storage subsystem
To prepare the original storage subsystem for the upgrade, perform the following steps:
1. If any long running tasks are processing in the original storage subsystem, make sure that
they have completed. Examples of long running tasks are:
– Dynamic logical drive capacity expansion
– Dynamic volume expansion (DVE)
– Dynamic capacity expansion (DCE)
– Logical drive segment size modification
– Array RAID-level modification
– User-initiated array redundancy checking (on the Storage Subsystem Management
window, select Array ï‚® Check Redundancy).
– Remote mirror logical drive synchronization FlashCopy image or VolumeCopy image
logical drive creation.
– Logical drive reconstruction or copyback.
2. Save the storage subsystem profile in a safe location and not on the logical drives that are
mapped from the original storage subsystem.
3. Record the version of the controller firmware that is on the storage subsystem.
4. Collect all support data of the original storage subsystem.
5. Stop all programs, services, and processes on the host servers that access the logical
drives that are defined in the migrated hard disk drives. Also, make sure that there are no
programs, services, or processes running in the background that write data to the logical
drives.
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