The SPARC SuperCluster T4-4 rack contains two power distribution units. Each component in the SPARC SuperCluster T4-4 has redundant connections to the two power distribution units:
SPARC T4-4 servers – Each SPARC T4-4 server has four AC power connectors. Two AC power connectors connect to one power distribution unit, and the other two AC power connectors connect to the other power distribution unit.
Exadata Storage Servers – Each Exadata Storage Server has two AC power connectors. One AC power connector connects to one power distribution unit, and the other AC power connector connects to the other power distribution unit.
Sun ZFS Storage 7320 storage controllers – Each Sun ZFS Storage 7320 storage controller has two AC power connectors. One AC power connector connects to one power distribution unit, and the other AC power connector connects to the other power distribution unit.
Sun Disk Shelf – The Sun Disk Shelf has two AC power connectors. One AC power connector connects to one power distribution unit, and the other AC power connector connects to the other power distribution unit.
Sun Datacenter InfiniBand Switch 36 switches – Each Sun Datacenter InfiniBand Switch 36 switch has two AC power connectors. One AC power connector connects to one power distribution unit, and the other AC power connector connects to the other power distribution unit.
Cisco Catalyst 4948 Ethernet management switch – The Cisco Catalyst 4948 Ethernet management switch has two AC power connectors. One AC power connector connects to one power distribution unit, and the other AC power connector connects to the other power distribution unit.