Novell IDENTITY MANAGER 3.6.1, Installation Manual

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In-place Upgrade Versus Migration
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In-place Upgrade Versus Migration
There are two different ways to upgrade: in-place upgrade or migration. Each method has
advantages and disadvantages, and there are scenarios where only one method can be used.
Š
Section 12.1, “In-place Upgrade,” on page 75
Š Section 12.2, “Migration,” on page 76
Š
Section 12.3, “Multiple Servers Associated with a Single Driver Set,” on page 76
12.1 In-place Upgrade
An in-place upgrade is installing the new version of Identity Manager on the existing server. To
install Identity Manager, you must upgrade the current versions of the OS and eDirectory
TM
to the
supported versions for Identity Manager 3.6.1. See Chapter 6, “System Requirements,” on page 45
for a list of the supported platforms.
The advantages are:
Š
No new hardware
Š
No migration of data
The disadvantages are:
Š
Downtime when the OS is updated and the server is rebooted
Š
Downtime when eDirectory is updated and is restarted
There are certain scenarios that occur when an in-place upgrade is not feasible, or multiple in-place
upgrades must be performed. Because Identity Manager 3.5.x and above are the only supported
migration paths, these are the only versions that are contained in the following scenarios:
The only supported situation for an in-place upgrade is to have Identity Manager 3.5.x on a
supported operating system. But there are some scenarios where an in-place upgrade is not feasible.
The following are some examples where an in-place upgrade is not feasible:
Š
Unsupported OS: If the current version of the OS is not supported by Identity Manager 3.6.1,
the only supported upgrade path is to perform a migration to a new server.
Š
Identity Manager 3.0 .x : If the current version of Identity Manager is 3.0. x , you cannot
perform a direct in-place upgrade. The two options are:
Š
Perform an in-place upgrade to Identity Manager 3.5.1, upgrade to eDirectory 8.8.5, then
perform an in-place upgrade to Identity Manager 3.6.1.
Š Perform a migration to a new server.
If you are performing an in-place upgrade, proceed to Chapter 13, “Performing an In-place
Upgrade,” on page 77 .