Dell PowerVault MD3600f Series Функціональний посібник - Сторінка 8

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Також для Dell PowerVault MD3600f Series: Посібник з розгортання (36 сторінок), Посібник з конфігурації (22 сторінок), Посібник з монтажу (18 сторінок), Матриця підтримки (17 сторінок)

Dell PowerVault MD3600f/MD3620f Remote Replication Functional Guide

Figure 1: Examples of Replication Relationships

Data Replication Modes

Data replication between the primary virtual disk and the secondary virtual disk is managed by the

MD36X0f storage arrays and is transparent to host machines and applications.

This section describes how data is replicated between arrays participating in Remote Replication and

the actions taken by the MD36X0f controller of the primary virtual disk if a link interruption occurs

between arrays.

The MD36X0f offers three replication modes: Synchronous Replication, Asynchronous Replication,

and Asynchronous with Write Order Consistency Replication. Each of these replication modes is

designed around a specific set of operational requirements and offers features that may be required of

the disaster recovery solution. These replication modes may be dynamically changed from one mode

to another.

Synchronous replication is defined as the completion of both the local primary write and the remote

write before acknowledgement is made to the host server issuing the I/O. This guarantees that the

remote virtual disks are identical to the primary side virtual disks with each and every write and

provides the highest level of data protection. Synchronous Replication Mode flow is shown in

Figure

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