Installation guide

32 EMC NetWorker Release 8.1 SP1 Installation Guide
Updating from a previous release
Introduction
This section provides you with the information to review before you update a NetWorker
host to 8.1.x and provides detailed information about the update procedure on each
supported operating system.
Note: “Downgrade to a Previous Release” on page 143 provides the steps required to
downgrade the NetWorker software.
Interoperability and backward compatibility
Before you update any host in the datazone, review information about the interoperability
and backwards compatibility.
Table 1 on page 32 summarizes interoperability and backward compatibility
requirements.
Table 1 Interoperability and backward compatibility requirements (page 1 of 2)
When updating Interoperability information
7.6.x and earlier storage
nodes
NetWorker 8.1.x server supports NetWorker 8.0.x and later storage
nodes only.
Update all NetWorker 7.6.x storage nodes to version 8.1.x before
updating the NetWorker server. This includes storage nodes that are
operating on standalone servers and dedicated storage nodes
operating on application servers. Update storage nodes embedded
within the EMC Disk Library (EDL SN) to NetWorker 8.0.x. EDL SN does
not support NetWorker 8.1.x.
Note: A NetWorker 8.1.x server disables NetWorker 7.6.x and earlier
storage nodes.
7.5.x NetWorker server You cannot directly update a NetWorker 7.5.x server to NetWorker
8.1.x.
Use the following method to update the hosts in a NetWorker 7.5.x
datazone:
1. Update the NetWorker 7.5.x server to version 7.6.x.
2. Update each NetWorker storage node to version 8.1.x.
Note: Update EDL SN to NetWorker 8.0
3. Update the NetWorker 7.6.x server to version 8.1.x.
4. Update the NetWorker clients to version 8.1.x.
8.0.x or 8.1 NetWorker
server with synthetic full
backups
Starting with NetWorker 8.1 SP1, you cannot set the backup level for a
group to synth_full. When you update the NetWorker server to 8.1
SP1, the backup level for a group that was configured to use the
synth_full backup level will be blank.
Before you update the NetWorker server software, review the Group
configuration, and scripts that perform synthetic full backups by
using the savegrp command. For groups that specify the synth_full
backup level, perform one of the following actions:
• Modify the Level attribute to use the incr_synth_full level instead
of synth_full.
• Specify a schedule for the group that contains the synth_full level.