Shared access of the container file or a replaced device are now possible by connecting with the /SHARE switch. For this to work the 'LD' devicename must be the same on all nodes of the cluster which connect to the same container file or device. Device geometry can now be specified by connecting a device with the /SECTORS, /TRACKS and /CYLINDERS qualifiers. Also the maximum usable size may be given with the /MAXBLOCKS qualifier, which supersedes the /ALLOCATED qualifier. An allocation class may be specified for the LD device with the /ALLOCLASS qualifier for CONNECT. If this is not done then the default is the value from the systemparameter ALLOCLASS. A switch was added to CONNECT, /SYMBOL. This allows a DCL symbol to be set representing the created unit number if it was not specified.