Seagate ST39103LC Guia do Utilizador descarregar pdf (Página 11)

Chapter 1. SVA Path Overview 1

Chapter 1. SVA Path Overview

This chapter provides an overview of SVA Path Intelligent Data

Path Management software and its features.

SVA Path offers a new level of data accessibility and improved

performance for the SVA 9500. It eliminates the point of failure

represented by a single input/output (I/O) path between servers

and storage systems and permits I/O to be distributed across

multiple paths.

Failover/Failback Data Paths

By providing alternate I/O paths from the server to the SVA, SVA

Path provides uninterrupted access to mission-critical data. This

substantially insulates server applications from I/O path failures.

In the event of a failed host bus adapter (HBA), interface cable, or

channel I/O card within the SVA, SVA Path automatically reroutes

I/O traffic to an alternate data path. Failover is essentially

transparent, ensuring continuous access to data stored on the SVA.

When configured in the recommended failback mode, SVA Path

automatically restores the primary data path and system

redundancy once the defective component is replaced.

Load Balancing

SVA Path supports up to 32 data paths between a host and any

SVA logical device. Since only two data paths are required for

path failover capability, multiple data paths can be used to

improve performance in one of three ways:

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Seagate ST39103LC Guia do Utilizador Página 11