From the Specs on this unit:
Operating systems
AIX V5.3 or later
IBM i V5.4 or later
SUSE Linux Enterprise Server 10 for POWER™ SP2 or later
Red Hat Enterprise Linux 4.7 and 5.2 for POWER or later
System dimensions
One frame (slimline doors): 79.3"H x 30.5"W x 58.5"D (201.4 cm x 77.5 cm x 148.6 cm); weight: 3,376 lb (1,531 kg)2
One frame (acoustic doors): 79.3"H x 30.5"W x 71.1"D (201.4 cm x 77.5 cm x 180.6 cm); weight: 3,422 lb (1,552 kg)2
When I think IBM...I think mainframe, and 3400lbs sounds mainframe to me.