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Fabric OS v7.0.1a Release Notes v1.0 Page 12 of 74

FOS Migration Considerations

This section contains important details to consider before migrating to or from this FOS release.

TSBs - Critical Issues to Consider Prior to Installing This FOS Release

Technical Support Bulletins (TSBs) are produced to provide detailed information about high priority defects or

issues present in FOS releases. The following sections specify all current TSBs that have been identified as

being a risk to or resolved with this specific version of Fabric OS. Please review carefully and refer to the

complete TSB for relevant issues prior to migrating to this version of code. TSBs can be found at

http://my.brocade.com under the ―Technical Documentation‖ section of the ―documentation‖ tab.

TSB Issues Outstanding in FOS v7.0.1

Issues in the following list of TSBs are known to be potential risks to using FOS v7.0.1 and should be

considered carefully prior to using this release of code:

TSB

Summary

None

TSB Issues Resolved in FOS v7.0.1

Issues in the following list of TSBs are known FOS v7.0.x risks that are not exposures in FOS v7.0.1. Note that

the issues addressed in this list of TSBs may also be resolved in other FOS releases. Refer to the specific

Release Notes for each release to verify resolution details.

TSB

Summary

None

Recommended Migration Paths to FOS v7.0.1

Migrating from FOS v7.0

Any 8G or 16G platforms running any FOS v7.0.0x release can be non-disruptively upgraded to FOS v7.0.1.

Migrating from FOS v6.4.x

DCX/DCX-4S units running any FOS v6.4.x release can be non-disruptively upgraded to FOS v7.0.1.

Any 8G platforms (other than DCX/DCX-4S) that are currently operating at lower than FOS v6.4.1a must be

upgraded to FOS v6.4.1a or later before non-disruptively upgrading to FOS v7.0.1 Upgrading these platforms

from any FOS V6.4.x release lower than FOS v6.4.1a to FOS v7.0.1 will cause disruption to FC traffic.

Upgrading any 8G platform operating at FOS v6.4.1a or later to FOS v7.0.1 is non-disruptive to FC traffic.

Migrating from FOS v6.4.1_fcoe1

The upgrade from FOS v6.4.1_fcoe1 to FOS v7.0.1 is non-disruptive to both FC and FCoE traffic on DCX and

DCX-4S.

Note: Upgrading from FOS v6.4.1_fcoe or FOS v6.4.x releases other than v6.4.1_fcoe1 to FOS v7.0.1 will be

disruptive to FCoE traffic going through FCOE10-24 blades in DCX/DCX-4S. When loading FOS v7.0.1 with

Brocade Network Advisor v11.1.1/11.1.1a, there is no warning flagging this FCoE traffic disruption.

Migrating from FOS v6.3.x

To non-disruptively migrate from FOS v6.3.x to v7.0.1, units should first load FOS v6.4.1a or later (v6.4.1b

should be used for encryption platforms, units operating in Access Gateway mode, or units with ports

configured as EX or VEX for FCR), and then migrate to FOS v7.0.1.

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Brocade Communications Systems 8/80 Manuel de service Page 12