Dell PowerVault 775N Dell PowerVault NAS Fibre Channel Cluster Platform - Page 7

• The maximum cable length is 100 meters for Fast Ethernet and copper Gigabit Ethernet and 550 meters for optical Gigabit Ethernet. This distance may be extended using switches and VLAN technology. The maximum latency for a round-trip network packet between nodes is 500 milliseconds. Obtaining More Information See the Dell PowerVault NAS Fibre Channel Cluster Systems Installation and Troubleshooting Guide for installation instructions. Installing Peripheral Components in Your NAS Cluster Node PCI Slots This section provides configuration information for adding HBAs, a DRAC II or DRAC III, and RAID controllers into your NAS cluster node PCI slots. Table 1-2 provides configuration information for PowerVault 770N and 775N cluster nodes. CAUTION: Only trained service technicians are authorized to remove and access any of the components inside the system. See your System Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. Table 1-2. PCI Slot Assignments for NAS Cluster Nodes PowerVault NAS System 770N PCI Buses HBA RAID Controller PCI bus 0: PCI slot 1 is 32 bit, 33 MHz. PCI/PCI-X bus 2: PCI slot 7 is 64 bit, 33/66/100/133 MHz. PCI/PCI-X bus 3: PCI slot 6 is 64 bit, 33/66/100/133 MHz. For dual HBA configurations, Dell recommends installing the HBAs on separate 64-bit PCI buses to balance the load on the system. PCI/PCI-X bus 4: PCI slots 4 and 5 are 64 bit, 33/66/100 MHz. PCI/PCI-X bus 5: PCI slots 2 and 3 are 64 bit, 33/66/100 MHz. NOTE: If you are using expansion cards with different operating speeds, you should install the fastest card in slot 7 and the slowest card in slot 1. Install in any available PCI slot, or use the integrated RAID controller on the system board. Platform Guide 7