Foundry Networks LS 648 - Manual (Page 57)

Hardware Specifications
September 2007 © 2007 Foundry Networks, Inc. 2 - 3
Storage Environment
Table 0.7 provides the storage environment specifications for the FastIron LS.
Mean Time Before Failure
Table 0.8 provides the intitial MTBF result for the FastIron LS (including the Power Supply Unit).
Cooling
The cooling fans cool the CPU, main memory, and voltage regulators. The fans use either a push or pull
configuration to move the air from the left side of the device to the right side of the device.
• Total cooling capacity: 80 to 100 watts
• Total air flow: 200 LFM
• Operating noise: < 43 dB-A
NOTE: Operating noise is based on the ISO 7779 standard.
The following illustration shows the airflow for the device.
Table 0.7: Storage Environment
Storage Temperature Storage Humidity Storage Altitude
-40
° to 158° F, -40° to 70° C
95% maximum, non-condensing 10,000 feet (3,000 meter)
maximum
Table 0.8: Mean Time Before Failure Specifiations
Platform Temperature System Failure Rate System MTBF
FLS624 25
° C (76.9° F)
6,154.453471 162,484
50
° C (121.9° F)
15,164.358600 65,944
FLS648 25
° C (76.9° F)
6,672.450037 149,870
50
° C (121.9° F)
15,531.295633 64,386
Air inlet
Air exhaust