Logan is one of two backend T5120s. Logan was received through the 2008 Sun AEG received by the TJ CSL. It is an LDOM server. LDOMs is a hypervisor-based virtualization scheme developed by Sun for SPARC hardware, similar to Xen on x86. Guests running on Logan include Ra (Sun Secure Global Desktop and CUPS), and either Ldap1 or Ldap2. Logan is a Sun SPARC Enterprise T5120 with 1 Sun UltraSPARC T2 (1.2GHz, 4 core, 8 threads/core) processor, 8GB RAM and 4x146GB disks running Solaris 10.