Using ring acceleration can further improve ring performance in large complexes, but it might introduce recovery considerations. When the sysplex matches the complex and ACCELSYS is set to 2, if two consecutive systems in the ring should fail, XCF might prompt the operator to either start or remove one of the systems that is stopped. Otherwise, one of the failed systems might hold the RSA-message and might have sent the shoulder tap to the other, which could have then granted access to resources prior to the system failure. The other systems in the ring would then not be aware that access had been granted to those resources.