Cisco Cisco MDS 9000 SAN-OS Software Release 1.0

Use the latest available software release supported by your vendor for all Cisco MDS 9000 Family 
products.

To determine the version of the Cisco NX-OS software currently running on a Cisco MDS 9000 Family 
switch using the CLI, log into the switch and enter the show version command.

To determine the version of the Cisco NX-OS software currently running on a Cisco MDS 9000 Family 
switch using the Fabric Manager, from the Switches tab in the information pane, locate the switch using 
the IP address, logical name, or WWN, and then check its version in the Release column.

To download the latest Cisco software, access the Software Center at this URL:

If you would like to request code to be provided under the terms of either GNU General Public License 
(GPL) or the GNU Lesser General Public License (LGPL), contact 
mds-software-disclosure@cisco.com.

This section provides information about upgrading to the current release or downgrading from it.

A downgrade from SSI 5.0(4q) to any other SSI release is not supported when SANTap is provisioned. 
Uninstall SANTap before you start the downgrade process.

Following a software upgrade to SSI Release 5.0(4q) in a 32-bit environment, you must unmount and 
remount all SCSI devices. The following procedure is specific to hosts or targets that see 32-bit LUN 
IDs. Follow these steps:

Quiesce all applications on the host.

Enter the following commands:

umount <file system>

varyoffvg <volume group>

exportvg <volume group>

Perform the upgrade.