Skip to main content
Sign Out

Welcome to Dell

My Account
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Enjoy members-only rewards and discounts
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.
Sign In Create an Account Dell Financial Services Premier Sign In Partner Program Sign In
Contact Us

Your Dell.com Carts

Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide

PDF

SRDF/Star site configuration transitions

In the following discussion, the initial configuration is as follows:

  • Site A is the workload site.
  • Site B is the nearby synchronous target site.
  • Site C is the distant asynchronous target site.

After a switch or reconfiguration, the workload site can shift to Sites B or C.

The new location of the synchronous target and the asynchronous target varies based on the new configuration.

In cascaded configurations, there are two possible configurations when the workload is at Site C:

  • Site A is the first hop toward Site B.
  • Site B is the first hop toward Site A.
NOTE:When the workload is at Site C:
  • Both of the target sites are long-distance links, so neither site can be synchronously mirrored.
  • Only one target site can be in a protected state and the Star CG an never become fully STAR protected.
NOTE:In the following diagrams, one of the targets is labeled as the (Sync) target in order to differentiate between the two target sites.

Transitions without concurrent devices

Figure 1. Site configuration transitions without concurrent devices

Transitions with concurrent devices (R22 Devices)

Figure 2. Site configuration transitions with concurrent devices

Rate this content

Accurate
Useful
Easy to understand
Was this article helpful?
0/3000 characters
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\