The desc ties this to the 'intervals' property of this compute node's PCIeFatalStats table — it is the count of statistics-collection intervals actually represented in this stats object's current sample history. Operationally, this tells you how many sampling cycles of history the 15-minute/hourly/daily/weekly/2-week figures above genuinely reflect, so if intervals is still low right after a server was added, the longer-window peak fields haven't filled in yet and shouldn't be read as proof of a clean multi-week history. For example, cucsComputePCIeFatalStatsIntervals reading 4 shortly after a blade is inserted means only four sampling cycles of PCIe fatal-error data exist yet, so the 2Weeks/2WeeksH fields are effectively still empty rather than confirming two genuinely quiet weeks.