HP StorageWorks 1606 Brocade Fabric OS Administrator's Guide v6.3.0 (53-100133 - Page 217

Considerations for FICON CUP environments, HA sync state, TABLE 42

Page 217 highlights

Firmware download process overview 9 In most cases, you will be upgrading firmware; that is, installing a newer firmware version than the one you are currently running. However, some circumstances may require installing an older version; that is, downgrading the firmware. The procedures in this section assume that you are upgrading firmware, but they work for downgrading as well, provided the old and new firmware versions are compatible. Always reference the latest release notes for updates that may exist regarding downgrades under particular circumstances. For details on Administrative Domains and the firmware download process, see Chapter 15, "Managing Administrative Domains" for more information. For details about testing and restoring firmware, see "Test and restore firmware on enterprise-class platforms" on page 190. Considerations for FICON CUP environments To prevent channel errors during nondisruptive firmware installation, the switch CUP port must be taken offline from all host systems. HA sync state High availability (HA) synchronization occurs when two CPs in an enterprise-class platform are synchronized. This state provides redundancy and a non-disruptive firmware download. In order for a firmware download to successfully occur, the two CPs in an enterprise-class platform must be in sync. If the CPs have mixed versions when you enter the firmwareDownload command, the CPs may not be in HA sync. In this case, you need to enter the firmwareDownload -s command first to upgrade or downgrade the standby CP to the same level as the active CP first, and then upgrade the CPs to the desired version of firmware. NOTE You should not run mixed firmware levels on CPs. Table 42 shows the sync state of an enterprise-class platform that has different Fabric OS versions installed on the active and standby CP. Use the table to determine if you need to use the fimrwareDownload -s command. TABLE 42 Enterprise-class platform HA sync states Active CP Fabric OS Standby CP Fabric OS version version HA sync state Remedy v6.1.x v6.2.0 v6.2.0 v6.2.x v6.3.0 v6.3.0 v6.2.0 v6.1.x v6.2.0 v6.3.0 v6.2.x v6.3.0 inSync no sync inSync inSync If Ethernet Switch Service is enabled, no sync. inSync n/a Run firmwareDownload -s on the standby CP and upgrade it to v6.2.0. n/a n/a Run firmwareDownload -s on the standby CP and upgrade it to v6.3.0. n/a Fabric OS Administrator's Guide 175 53-1001336-01

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Fabric OS Administrator’s Guide
175
53-1001336-01
Firmware download process overview
9
In most cases, you will be
upgrading
firmware; that is, installing a newer firmware version than the
one you are currently running. However, some circumstances may require installing an older
version; that is,
downgrading
the firmware. The procedures in this section assume that you are
upgrading firmware, but they work for downgrading as well, provided the old and new firmware
versions are compatible. Always reference the latest release notes for updates that may exist
regarding downgrades under particular circumstances.
For details on Administrative Domains and the firmware download process, see
Chapter 15,
“Managing Administrative Domains”
for more information.
For details about testing and restoring firmware, see
“Test and restore firmware on
enterprise-class platforms”
on page 190.
Considerations for FICON CUP environments
To prevent channel errors during nondisruptive firmware installation, the switch CUP port must be
taken offline from all host systems.
HA sync state
High availability (HA) synchronization occurs when two CPs in an enterprise-class platform are
synchronized. This state provides redundancy and a non-disruptive firmware download. In order for
a firmware download to successfully occur, the two CPs in an enterprise-class platform must be in
sync.
If the CPs have mixed versions when you enter the firmwareDownload command, the CPs may not
be in HA sync. In this case, you need to enter the
firmwareDownload –s
command first to upgrade
or downgrade the standby CP to the same level as the active CP first, and then upgrade the CPs to
the desired version of firmware.
NOTE
You should not run mixed firmware levels on CPs.
Table 42
shows the sync state of an enterprise-class platform that has different Fabric OS versions
installed on the active and standby CP. Use the table to determine if you need to use the
fimrwareDownload -s
command.
TABLE 42
Enterprise-class platform HA sync states
Active CP Fabric OS
version
Standby CP Fabric OS
version
HA sync state
Remedy
v6.1.x
v6.2.0
inSync
n/a
v6.2.0
v6.1.x
no sync
Run
firmwareDownload -s
on the
standby CP and upgrade it to
v6.2.0.
v6.2.0
v6.2.0
inSync
n/a
v6.2.x
v6.3.0
inSync
n/a
v6.3.0
v6.2.x
If Ethernet Switch Service is
enabled, no sync.
Run
firmwareDownload -s
on the
standby CP and upgrade it to
v6.3.0.
v6.3.0
v6.3.0
inSync
n/a