Sun Microsystems SPARC T5220 - Manual (Page 12)

10 The Evolution of Chip Multithreading (CMT) Sun Microsystems, Inc.
Space, Watts, and Performance: Introducing the SWaP Metric
Sun SPARC Enterprise T5120 and T5220 servers deliver leading performance across a
range of multithreaded workloads and benchmarks. However, with energy and real
estate costs and pressures, it is not enough to measure performance in isolation.
Delivering the required level of throughput in a fixed space and power envelope is
critical. Traditional system-to-system benchmarks are valuable as a way of comparing
one system to another, but are limited when it comes to understanding the power and
density attributes of the systems being compared. For this reason, Sun has developed
the SWaP metric, standing for Space, Watts, and Performance . Designed to provide a
simple and transparent measure of overall server efficiency, SWaP is calculated using
the following formula:
SWaP = Performance / (Space * Power Consumption) where,
• Performance is measured by industry-standard audited benchmarks such as those
sponsored by the Systems Performance Evaluation Corporation (SPEC)
• Space refers to the height of the server in rack units (RUs)
• Power is measured by watts used by the system, taken during actual benchmark runs
or from vendor’s site planning guides
For the latest SWaP results for a variety of benchmarks, please see sun.com/servers/
coolthreads/benchmarks .
Ethernet Four on-board Gigabit Ethernet
ports (10/100/1000)
Two 10 Gb Ethernet ports via
XAUI combo slots Four on-board Gigabit Ethernet
ports (10/100/1000)
Two 10 Gb Ethernet ports via
XAUI combo slots
Power supplies Two hot-swappable AC 650W or
DC 660W power supply units
(N+1 redundancy) Two hot-swappable AC 750W
power supply units
(N+1 redundancy)
Fans Four hot-swappable fan trays,
with 2 fans per tray,
N+1 redundancy 3 hot-swappable fan trays, with
2 fans per tray, N+1 redundancy
Form factor 1 rack unit (1U) 2 rack units (2U)
a.Optional XAUI adapter cards required for access to dual 10 Gb Ethernet ports on the
UltraSPARC T2 processor
Feature
Sun SPARC Enterprise T5120
Server Sun SPARC Enterprise T5220
Server