958-000284-007, March 2005)

Upgrades and downgrades are supported only from one major release to the next, such

as from 06.xx.xx to 07.00.00-84. If EWS is used for upgrades and downgrades, and

this rule is not followed, errors occur and there may be a disruption to a ttached devices.

Downgradingtorelease6.0withthePreferredPathfeatureconfiguredcouldcauseloss

of this function. H P recommends that Preferred Path be disabled before downgrading.

To do this, deselect the check box for Enable Preferred Path in the Configure

Preferred Paths dialog box.

NOTE:

The Director 2/140 and the Edge Switch 2/24 cannot be downgraded earlier than

04.01.00, and the Edge Switch 2/12 cannot be downgraded earlier than 05.05.00.

Downgrades directly to 05.03. 01 from 06.xx.xx is not concurrent when the

second-generation Edge Switch 2/24 is configured in O pen Fabric operating

mode. In other words, downgrades in Open Fabric mode cannot be done with the

second-generation Edge Switch 2/24 online without disrupting port operations. Since

second-generation Edge Switch 2/24 switches cannot be downgraded earlier than

05.03.01, they must be configured in Homogeneous Fabric Interoperability

mode to remain concurrent. If this process is not followed, I/O through the switch may

be significantly disrupted or stopped. Recovery for this situation is accomplished by

reactivating the current zone set.

If you are installing a new or replacement second-generation Edge Switch 2/12 or Edge

Switch 2/24 into an existing 05.xx.xx fabric, HP recommends that you downgrade

the unit before installing it into the fabric.

Downgrading to 05.05.00 is supported only on first-generation Edge Switch 2/12

switches. Second-generation Edge Switch 2/12 switches can be downgraded only to

05.05.01. Second-generation Edge Switch 2/24 switches can be downgraded only

to 05.03.01.

If a Director 2/140 in a multiswitch fabric is downgraded earlier than 06.02.00, ISLs

could becom e segm ented if there are any other switches in the fabric operating with

a firmware version earlier than 06.01.00. To prevent this situation, downgrade all

Director 2/140s in the fabric to 06.01.00 before downgrading any products in the

fabric to 05.xx.xx. This problem only exists with Director 2/140s in the fabric. HAFM

displays a warning message if a downgrade from 06.02.00 is at tempted, but you can

continue with the downgrade if desired.