Appendix A: Hardware Reliability - Avaya Virtual Services Platform 7000 Series Installation Manual

Appendix A: Hardware reliability

Mean time between failures
Mean time between failures (MTBF) is the average value of the time intervals between successive outages
of the system. This average value is calculated from, and based on, a large population of nominally
identical items. The following table provides MTBF values for VSP 7000 series hardware.
Important:
You must install the switch and it's components correctly and operate the hardware within the supported
environmental conditions. The MTBF values in the following table do not include failure caused by
software or human error.
Hardware
VSP7024XLS base unit (no fans, no power
supplies)
Fan tray (Back to Front, or Front to Back)
Power supply
7008XLS Media Dependent Adapter (8 SFP+
ports)
7008XT Media Dependent Adapter (8 10GBASE-
T ports)
VSP 7000 installation
MTBF (Calculated)
261,500 hours
1,000,000 hours
300,000 hours
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