Specifications

6
Troubleshooting
124
TypicallyeachIPMChasonlyitsowneventsinitsSEL.TheShMCsareexceptionstothisrule
becausetheylogeventsfromallIPMCsintheshelfintheirSEL.Asaconsequence,theShMC
SELisquitelargeandhasnearly19KB(about1200entries)ofSELspace.
Shelf Manager tables
TheShelfManagerusestablesandfilestostoreinformationanddatarelatedtoevents,
alarms,sensorsandresources,etc.Thefollowinguser‐orapplication‐accessiblefilesand
tablesexistintheShelfManager:
• shmgr.log
•DomainEventLog(DEL)
•SystemEventLog(SEL)
•DRT,RPT,RDR,DAT
TheabovelistincludesalltheHPIaccessibletablesthatuserscandealwithintheirsoftware.
TheShelfManagerkeepsmanyinternaltablestomanagethesystem,sotablesofIPMCs,
FRUs,SDRs,E‐Keys,Fans,powersupplies,etc.aremaintainedbytheShelfManager.Theseare
inaccessibletotheuserandareonlyfortheshelfmanagementsoftware'sinternalusage.The
tablesareallmaintainedinRAMontheSCMLMP,andareonlyactivewhiletheShelf
Managerisrunning.OncetheShelfManagerisstoppedortheSCMisreset,theinaccessible
tablesgetcleanedupautomatically.
Eachtablehasasetsize/eventlimit.ForexampletheShelfManagercansupportupto100
IPMCswith32FRUsoneachIPMCandupto1000SDRsperIPMC.Therearenolimitson
numberofE‐KeysperIPMCbecausethatnumberisalreadylimitedbythesizeofboardpoint‐
to‐pointrecordsthattheIPMCcancontain.
TheHPIservercansupportamaximumof1024eventsintheDomainEventLog.This
configurableandthedefaultis255.TheHPIservercansupportamaximumof1024alarmsin
theDAT.Outofthese1024,amaximumof512canbeuseralarms.Thenumberofuser alarms
isconfigurablewiththedefaultlimitbeing50.
TheHPIDATandDELaremaintainedinRAMsotheyarenotpersistentoverSCMresets.The
DATandDEL
are,however,synchronizedbetweenpeerShelfManagers,soeveniftheactive
ShelfManagerresets,itisstillaccessiblethroughthepeer,newlyactive,ShelfManager.
TheRPTiscapableofsupportingthemaximumFRUlimitthatcanbesupportedbytheShelf
Managerplusallslotsassociatedwiththem.ThismeansthatRPTcansupport3200FRUs.
ThedefaultShelfManagerlogsizeis8MB.Everytimethelogreachesthe8MBlimititis
copiedtoazippedbackupcopytosavespace.TheShelfManagerkeepsthefirsttwoShelf
Managerloginstances(thosecreatedrightafterShelf
Managerstart)andthelasttenbackup
copies.Undernormaloperatingconditionsthereshouldabout3hoursofloggingineach
shmgr.logcopy.thismeansthatbout30hoursoflogsshouldbeavailableatanygiventime.
Theshmgr.logfilesizeisconfigurableuptoamaximumof16MB.