Installation, User's and Maintenance Guide for your storage subsystem for
information about the storage enclosure cabling rules.
f.
Purchase any additional hardware that is required to cable the existing
storage enclosures to the new storage subsystem by using the storage
enclosure cabling layout as a guide.
g.
Ensure that the original subsystem is in Optimal state. For more
information, see “Bringing storage subsystems and drive loops into optimal
state” on page 11 and the Recovery Guru in the DS Storage Manager
Subsystem Management window.
h.
Perform a full backup of the original storage subsystem and schedule it for
downtime.
i.
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.
j.
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.
2.
Preparing the new storage subsystem.
To prepare the new storage subsystem for the upgrade, complete the following
steps:
a.
Unpack the new storage subsystem and install it in a rack. Do not connect it
to the storage enclosures that are attached to the original storage subsystem.
b.
Connect the new storage subsystem to the systems-management network by
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.
3.
Preparing the original storage subsystem.
To prepare the original storage subsystem for the upgrade, complete the
following steps:
a.
If any long-running tasks are processing in the original storage subsystem,
ensure that they complete processing. Examples of long-running tasks are:
v
Dynamic logical drive capacity expansion
– Dynamic logical drive expansion (DVE)
– Dynamic capacity expansion (DCE)
v
Logical drive segment size modification
v
Array RAID-level modification
v
User-initiated array redundancy checking (on the Storage Subsystem
Management window, click Array -> Check Redundancy)
v
Remote mirror logical drive synchronization FlashCopy image or
VolumeCopy image logical drive creation
v
Logical drive reconstruction or copyback
b.
Save the storage subsystem profile in a safe location and not on the logical
drives that are mapped from the original storage subsystem.
c.
Record the version of the controller firmware that is on the storage
subsystem.
Chapter 4. Upgrading a storage subsystem controller
47
Summary of Contents for System Storage DCS Series
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