The Oracle VM Server for SPARC software allocates memory in multiples of 256 Mbytes aligned on 256-Mbyte address boundaries. Thus, the smallest domain that can be created by the Logical Domains Manager must have 256 Mbytes of memory. However, the actual memory size requirement is a characteristic of the guest operating system. Some Oracle VM Server for SPARC functionality might not work if the amount of memory present is smaller than the recommended size. For recommended and minimum memory requirements for the Oracle Solaris 10 OS, see System Requirements and Recommendations in Oracle Solaris 10 1/13 Installation Guide: Planning for Installation and Upgrade. For recommended and minimum memory requirements for the Oracle Solaris 11 OS, see Oracle Solaris 11 Release Notes, Oracle Solaris 11.1 Release Notes, Oracle Solaris 11.2 Release Notes, and Oracle Solaris 11.3 Release Notes.