EMC CX600 Configuration Guide - Page 22
Common Rules for DS-xxB and DS-xxM Switches, Connection to Dual Fabrics, DS-xxB Series Switches - clariion specifications
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February 3, 2003 EMC CLARiiON Open Systems Configuration Guide Common Rules for DS-xxB and DS-xxM Switches Connection to Dual Fabrics For servers with two or more HBA ports connected to the same storage system - One HBA port and one storage-system SP must be connected to one fabric and the other HBA port and other storage-system SP must be connected to the other fabric. - Individual ports on each FC 4700 SP must be connected to different fabrics. For example, if SP A port 0 is connected to fabric Z, then SP A port 1 connects to fabric Y. For maximum availability, the port connections on the two SPs should reverse each other; in the example, SP B Port 0 connects to fabric Y, and SP B port 1 to fabric Z. DS-xxB Series Switches DS-8B-00D Switch 8 shortwave length (SWL) GBICs. DS-16B-00D Switch 16 shortwave length (SWL) GBICs. DS-16B2-0D Switch 16 shortwave length (SWL) SFPs. DS-32B2-0D Switch 32 shortwave length (SWL) SFPs. Switch Port Connections Groups of four consecutively numbered ports on a switch comprise a quad. For example, a DS-16B switch has four quads consisting of ports 0-3, 4-7, 8-11, and 12-15. You can connect only one port in a quad to a storage-system SP port. You connect the remaining three ports in the quad to HBA ports or to ports on other switches. QuickLoop All DS-xxB switches support QuickLoop, except for DS-16B2 and DS-32B2 switches in 2Gbit mode. Trunking Supported only on ISLs between any combination of two DS-16B2, DS-32B2, or ED-12000B switches, and requires that the connected ports be set to operate at 2 Gigabit speeds. You can configure a trunked port by setting the port to auto-negotiate or 2 Gigabit operation. Note: Refer to the CLARiiON sections in the EMC Support Matrix for details on attach-specific support for switch auto negotiation. Extended Distances DS-8B, DS-16B, DS-16B2, and DS-32B2 switches can operate beyond 500 meters with LWL optics (GBICs or SFPs), DWDM devices, or Fibre Channel to IP devices. Document Rev 19 Page 22 EMC Confidential