HP Cisco MDS 8/24c Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Rel - Page 16

Upgrading Your Cisco MDS NX-OS Software Image Send documentation comments to [email protected] General Upgrading Guidelines Note To upgrade to Cisco NX-OS Release 5.0(4d) from SAN-OS Release 3.2(3a) or earlier, first upgrade to SAN-OS Release 3.3(x), then upgrade to Cisco NX-OS Release 4.1(x) or 4.2(x), and then upgrade to Cisco NX-OS Release 5.0(4d). Use the following guidelines when upgrading to Cisco MDS NX-OS Release 5.0(4d): • Install and configure dual supervisor modules. • Issue the show install all impact upgrade-image CLI command to determine if your upgrade will be nondisruptive. • Follow the recommended guidelines for upgrading a Cisco MDS 9124 or MDS 9134 Switch as described in "Upgrading a Cisco MDS 9124 or Cisco MDS 9134 Switch" section on page 20. • 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 21. • 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(4d). See the "Upgrading Effect on VSAN 4079" section on page 19 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 11 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 19 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 18. 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 11 to determine your nondisruptive upgrade path to Cisco MDS NX-OS Release 5.0(4d), 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 11 applies only to Fibre Channel switching traffic. Upgrading system software disrupts IP traffic and SSM intelligent services traffic. Cisco MDS 9000 Family Release Notes for Cisco MDS NX-OS Release 5.0(4d) 16 OL-21012-06