When attempting to communicate with the primary Encryption Key Manager, the IOS proxy interface may retry several times before switching over to the secondary Encryption Key Manager. While these retries are occurring, the job may appear to have hung. Before cancelling the job, ensure that enough time is allowed because of these retry attempts that may be occurring on the primary Encryption Key Manager and also the secondary Encryption Key Manager. Typically, each retry attempt may take around 3 minutes with two retry attempts on the primary Encryption Key Manager before the IOS proxy interface attempts to connect to the secondary Encryption Key Manager. Similar logic is then in place with the secondary Encryption Key Manager. Once the IOS proxy interface has switched to the secondary Encryption Key Manager, it will always attempt to communicate with the primary Encryption Key Manager on subsequent communications. However, in this case, only one (shortened) attempt is made to communicate with the primary Encryption Key Manager before going back to the secondary Encryption Key Manager. If the IOS proxy interface cannot communicate with the primary Encryption Key Manager, even though the job may have been successful, message IOS627E is issued in the job log and in the system log alerting you to a potential problem with the primary Encryption Key Manager.