Dell CX200 플랫폼 매뉴얼 - 페이지 6

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High-Availability Cluster Configurations

This section provides information about the supported operating systems, HBAs, and HBA drivers

for your NAS cluster configuration.

NOTICE:

cluster configurations are tested and certified using identical HBAs installed in all cluster nodes. Using

dissimilar HBAs in your cluster nodes is not supported.

NAS cluster nodes can use any of the following HBAs: Emulex LP9002L, Emulex LP982, Emulex

LP9802, or QLogic QLA2340. See "Installing Peripheral Components in Your NAS Cluster Node

PCI Slots" for PCI slot recommendations.

Only optical HBA connectors are supported.

•

Dual (redundant) fabric configurations are required.

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A maximum of 16 switches may be used in a SAN.

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A minimum of two and a maximum of eight Inter-Switch Links (ISLs) may exist between any

two directly communicating switches. A single ISL is permitted only when connecting to a

remote switch in an EMC

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A maximum of three hops (the number of ISLs that each data frame must traverse) may exist

between a host and a storage system.

When configuring your NAS cluster, all cluster nodes must contain identical versions of the

following:

•

Operating systems and service packs

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Hardware drivers, firmware, or BIOS for the NICs, HBAs, and any other peripheral hardware

components

•

Systems management software, such as Dell OpenManage™ systems management software

and EMC Navisphere

•

The maximum cable length allowed from an HBA to a switch, from an HBA directly

connected to a storage system, or from a switch to a storage system is 300 meters using

multimode fiber at 2 Gb/sec. This distance may be increased through the use of switch ISLs.

Platform Guide

All cluster nodes in a NAS cluster must run the same operating system.

HBAs installed in NAS clusters using redundant paths must be identical. PowerVault NAS

MirrorView™ configuration.

storage management software