HP Cisco MDS 8/24c Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Rel - Page 15

Upgrading Your Cisco MDS NX-OS Software Image Send documentation comments to [email protected] • Follow the guidelines for upgrading a single supervisor switch as described in "Performing a Disruptive Upgrade on an MDS 9000 Family Switch" section on page 20. • Be aware of the impact of an upgrade on VSAN 4079 if you are upgrading from SAN-OS Release 3.x to NX-OS 5.0(4). See the "Upgrading Effect on VSAN 4079" section on page 18 for details. • Be aware that some features impact whether an upgrade is disruptive or nondisruptive: - Fibre Channel Ports: Fibre Channel ports can be nondisruptively upgraded without affecting traffic on the ports. See Table 10 for the nondisruptive upgrade path for all NX-OS and SAN-OS releases. - SSM: Intelligent services traffic on the SSM, such as SANTap, NASB, and FC write acceleration, is disrupted during an upgrade. SSM Fibre Channel traffic is not. - Gigabit Ethernet Ports: Traffic on Gigabit Ethernet ports is disrupted during an upgrade or downgrade. This includes IPS modules and the Gigabit Ethernet ports on the MPS-14/2 module, the MSM-18/4 module, and the MDS 9222i switch. Those nodes that are members of VSANs traversing an FCIP ISL are impacted, and a fabric reconfiguration occurs. iSCSI initiators connected to the Gigabit Ethernet ports lose connectivity to iSCSI targets while the upgrade is in progress. - Inter-VSAN Routing (IVR): With IVR enabled, you must follow additional steps if you are upgrading from Cisco SAN-OS Release 2.1.(1a), 2.1(1b), or 2.1.(2a). See the "Upgrading with IVR Enabled" section on page 18 for these instructions. - FICON: If you have FICON enabled, the upgrade path is different. See the "FICON Supported Releases and Upgrade Paths" section on page 17. Note In addition to these guidelines, you may want to review the information in the "Limitations and Restrictions" section prior to a software upgrade to determine if a feature may possibly behave differently following the upgrade. Use Table 10 to determine your nondisruptive upgrade path to Cisco MDS NX-OS Release 5.0(4), find the image release number you are currently using in the Current column of the table, and use the path recommended. Note The software upgrade information in Table 10 applies only to Fibre Channel switching traffic. Upgrading system software disrupts IP traffic and SSM intelligent services traffic. OL-21012-02 Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.0(4) 15