Cisco MDS-9124 Troubleshooting Guide - Page 84

SSM Overview Chapter 3 Managing Storage Services Modules Send documentation comments to [email protected] Table 3-1 lists the features supported for the SSM . Table 3-1 Cisco MDS SAN-OS Feature Support for the SSM. Cisco MDS SAN-OS Release Module 2.0(1b) 2.0(2b), 2.0(3), 2.0(4), and 2.0(4a) 2.1(1a) 2.1(2) and later SSM None Fibre Channel switching Fibre Channel switching Fibre Channel switching Intelligent Storage Intelligent Storage Intelligent Storage Services Services Services VSFN VSFN Nondisruptive upgrade for Fibre Channel switching traffic1 1. Requires EPLD version 2.1(2) (see "Installing EPLD Images on Modules" section on page 3-9) and SSI boot image version 2.1(2). When you upgrade, or downgrade, the SSI boot image on an SSM, you might disrupt traffic through the module. Table 3-2 describes how updating the SSI boot image affects SSM traffic. Table 3-2 SSI Boot Image Updating Affects on SSM Traffic Cisco MDS SAN-OS Release Traffic Type Disrupts Traffic? 2.0(2b) through 2.1(1a) 2.1(2) and later All Yes Layer 2 Fibre Channel switching No1 only Both Layer 2 Fibre Channel Yes switching and Layer 3 Intelligent Storage Services (such as FCWA, NASB, SANTap, and ISAPI virtualization) Layer 3 Intelligent Storage Yes Services (such as FCWA, NASB, SANTap, ISAPI virtualization) only 1. Requires EPLD version 2.1(2). See "Installing EPLD Images on Modules" section on page 3-9. As shown in Table 3-2, Layer 3 Intelligent Storage Services traffic is disrupted when you update the SSI boot image. If you configure Layer 3 Intelligent Storage Services on your SSM, we recommend that you shut down these services before upgrading the SSI boot image. You can use dual fabric configuration to minimize the impact of shutting down Layer 3 services. Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x 3-2 OL-9285-05