Block access protocol cautions
If your storage system is deployed in a SAN environment, you should review
these issues and take appropriate action before upgrading or reinstalling.
For more information about these issues, see the Data ONTAP 8.0 7-Mode Block
Access Management Guide for iSCSI and FC.
v “Non-ASCII characters in the comment string of the lun setup command
result in system panic”
v “Identical WWPNs can occur on both nodes in a cluster”
v “If you use Solaris 10 and the emlxs Fibre Channel Adapter driver”
v “cfmode support change in Data ONTAP 8.0”
Non-ASCII characters in the comment string of the lun setup command
result in system panic
If you enter non-ASCII characters in the comment string while running the
lun setup command, the system panics.
To avoid system panic, you must enter only ASCII characters in the comment
string of the lun setup command.
Identical WWPNs can occur on both nodes in a cluster
If a system and its disks are disconnected from its partner and then connected
to a different partner, it is possible (though rare) that both systems can end up
with the same WWPN.
If this situation occurs, the systems can behave as if they are both primary
systems or both secondary systems, causing each system to compute identical
WWPNs for its target ports. As a result, hosts will experience problems trying
to access these duplicate ports in the fabric.
If you use Solaris 10 and the emlxs Fibre Channel Adapter driver
If you are using Solaris 10 and the emlxs Fibre Channel Adapter driver, you
need to upgrade to the 2.30j version driver revision or later before you
upgrade to Data ONTAP 7.3 or later.
cfmode support change in Data ONTAP 8.0
For Fibre Channel storage area network (FC SAN) configurations in Data
ONTAP 8.0 and later releases, only single_image cfmode (cluster failover
mode) is supported. If you are upgrading high-availability FC SAN systems
from an earlier release and they are configured for any other cfmode, you
must migrate them to single_image mode before upgrading to Data ONTAP 8.0
or later.
Important cautions 79
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