Fos Migration Considerations; Fos Upgrade And Downgrade Special Considerations; Recommended Migration Paths To Fos V7.1.0A - Brocade Communications Systems Brocade 300 Release Notes

FOS Migration Considerations

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

FOS Upgrade and Downgrade Special Considerations

DCX/DCX-4S units running any FOS v7.0.x can be non-disruptively upgraded to FOS v7.1.0a. This upgrade is
non-disruptive to both FC and FCoE traffic (when using FCOE10-24 blades).
FR4-18i and FC10-6 blades are not supported on DCX/DCX-4S with FOS v7.1. Hence these blades must be
removed from the chassis before upgrading the firmware to FOS v7.1.
Disruptive upgrades to Fabric OS v7.1.0a are allowed and supported from FOS 6.4.x (up to a two-level
migration) using the optional "-s" parameter with the firmwaredownload command.
If there are multiple node EGs (encryption groups) in a fabric, please complete firmwaredownload on one node
at a time before downloading on another node.
The Brocade 8000 does not support non-disruptive hot code loads (HCL). Upgrading the Brocade 8000 to FOS
v7.1.0a will be disruptive to the I/O through the switch.

Recommended Migration Paths to FOS v7.1.0a

Migrating from FOS v7.0.0x
Any 8G or 16G platform running any FOS v7.0.0x firmware can be non-disruptively upgraded to FOS v7.1.0a.
However, users must pay close attention to the following before upgrading the DCX 8510 platforms to FOS
v7.1.0a:
If the upgrade on a DCX 8510 from FOS v7.0.0x to FOS v7.1.0a is blocked due to the absence of the EICL
license, users must first upgrade the DCX 8510 to FOS v7.0.1x or later, install the EICL license on the DCX
8510, and then proceed with upgrading the firmware to FOS v7.1.0a.
Migrating from FOS v7.0.1x or 7.0.2x
Any 8G or 16G platform running any FOS v7.0.1x /FOS v7.0.2x firmware can be non-disruptively upgraded to
FOS v7.1.0a. However, users must pay close attention to the following before upgrading the DCX 8510
platforms to FOS v7.1.0a:
If the upgrade on a DCX 8510 from FOS v7.0.1x/FOS v7.0.2x to FOS v7.1.0a is blocked due to the absence of
the EICL license, users must first install the EICL license on the DCX 8510 and then proceed with upgrading
the firmware to FOS v7.1.0a.
Migrating from FOS v7.1.0
Warning
Before upgrading the firmware to FOS v7.1.0a from FOS v7.1.0, you must run the supportSave command to
save any existing error log information. Once the switch is upgraded to FOS v7.1.0a, any previously existing
error log entries on the switch will be permanently lost - only new error log entries created while running FOS
v7.1.0a will be retained.
Any 8G or 16G platform running FOS v7.1.0 can be non-disruptively upgraded to FOS v7.1.0a. However, any
previously existing error log entries with FOS v7.1.0 will be permanently lost once upgraded to FOS v7.1.0a.
Fabric OS v7.1.0a Release Notes v1.0 Page 21 of 41