Go to Dell EMC Online Support (https://support.emc.com) to ensure that you are using the latest version of this document. This document provides an introduction to the Symmetrix Remote Data Facility (SRDF) and its uses in disaster recovery, high availability, and data migration applications.

Symmetrix Storage arrays participating in SRDF can be parted away from few meters to thousand of kilometres connected through FC or IP network. SRDF solution can also be used for Data Migration from one Symmetrix array to another. Let us analyse different types of SRDF Operations by using below setup.

2013年9月24日 · SyncInProg – Synchronization is underway between R1 and R2 because there are invalid tracks between R1/R2. Consistent – Same as Synchronized but for SRDF/A devices. Transmit Idle – SRDF/A can’t push the data in the transmit cycle because the link is down.

2017年9月25日 · 在 SRDF/Metro双活特性 中， R2设备是可供主机读、写访问的。 也就是说主机可以针对设备对的 R1和R2端同时进行写操作 (Active Active双活)。 由于R2 使用与其 R1 端相同的设备 WWN等外部设备标识，这一共享标识使R1和R2设备跨越两个阵列 对主机显示为一个虚拟设备。 根据应用软件 是否支持集群模式，SRDF/Metro双活特性支持两种应用环境。 一种是非集群方式。 在 应用不支持集群或单机运行时，可以只实现存储双活，主机读写通过多路径软件来决 …

With SRDF/Metro, the SRDF R2 device is also read/write accessible to the host and takes on the external identity of the primary R1 device (geometry, device WWN). By providing this external identity on the R2 device, both R1 and R2 devices may then appear as a single virtual device across the two SRDF paired arrays for host presentation.

This document describes how to use Solutions Enabler SYMCLI to manage SRDF®. This document is for advanced command-line users and script programmers to manage various types of control operations on arrays and devices using Solutions Enabler's SYMCLI commands. Dell Technologies uses the following conventions for special notices:

SRDF/Metro is a mode of SRDF which provides active/active access to the R1 and R2 of an SRDF configuration. In traditional SRDF, R1 devices are Read/Write accessible while R2 devices are Read Only/Write Disabled.

2007年2月13日 · EMC公司的远程数据镜像技术（SRDF），实现了数据在不同环境间的实时有效复制，而无论这些环境间相距几米、几公里，还是横亘大陆。 SRDF拥有两套磁盘子系统，分别称之为R1和R2，存放实时数据拷贝的R2子系统被安置在与存放原始数据拷贝的R1子系统不同的地点。 这样就确保了在数据中心发生故障时，R2系统仍然是可用的，而且与R1是同步的。 由于使用了不同的子系统，所以可对R1和R2分别进行寻址。 第二个数据拷贝（R2）可以按照只读模式供 …

2013年12月6日 · SRDF (Symmetrix Remote Data Facility)运用EMC Symmetrix数据存储系统实现灾难恢复和业务连续性。 简单来说,SRDF提供了从一个到一个、一个到多个物理上分离的Symmetrix系统的数据复制技术，尤其在多点容灾技术方面， SRDF远程数据复制技术在中间站点容量需求、扩展性等方面有一定优势. 2.SRDF的发展历史. 早在1994年，在Symmetrix的第三代产品 Symmetrix 5500中就引进了SRDF技术。 随着Symmetrix Enginuity Code level的不断更新 …

SRDF/Synchronous (SRDF/S) is a disaster-restart solution that operates in synchronous mode and maintains a real-time (synchronous) mirrored copy of production data (R1 devices) in a physically separated VMAX/PowerMax system (R2 devices) within an SRDF configuration.