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 SRDF Introduction

PDF

Mainframe-specific variations of SRDF/Star

GDDR provides some variations of SRDF/Star configurations that are unique to the mainframe environment.

Two-site SRDF/Star

In the two-site SRDF/Star configuration, there are three storage arrays as in any other SRDF/Star configuration, but there are GDDR controls systems at DC1 and DC3 only. This means that if there is a failure at DC1 (the primary site), operations can be restarted at DC3 only.

Asynchronous SRDF/Star (Star-A)

Asynchronous SRDF/Star configurations are similar to other SRDF/Star configurations but all SRDF links use SRDF/A. This enables both DC2 in addition to DC3 to be remote from DC1 and so provide better protection from a site failure at DC1.

SRDF/Star with Autoswap

Autoswap is a facility to move (swap) workloads from volumes in one set of storage arrays to volumes in another set of arrays without interrupting host processing. The combination of Autoswap with SRDF/Star provides near-continuous availability through device failover between sites DC1 and DC2, while also providing disaster restart capabilities at site DC3.

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: <>()\