Specifications

The SGI InfiniteStorage NAS Storage System
6 SGI InfiniteStorage NAS Server and Titan Server
withoutcompromisingperformance.Eachstorageservercanbeconfiguredas
asinglestandaloneserverorasanodeofacluster.Allnetworkclients
communicatedirectlywiththestorageserver.
TheserverprocessesfileaccessrequestsfromnetworkclientsviaGigabit
Ethernet(GE)or10GigabitEthernet(10GbE)links,reading
andwritingfrom/
tooneormultiplestoragedevices,connectedthroughFibreChannel(FC)
links.Storageserverscanbeconfiguredasstandaloneserversorasacluster
withmultiplenodes,whichsharethesamestoragedevices,sothatnetwork
requestscanbedistributedacrossclusternodes.
IS‐NASServerssupport
clusterswithuptotwonodes,andcurrentgeneration
TitanServerssupportclusterswithuptoeightnodes.Shouldoneclusternode
fail,itsfileservicesandserveradministrationfunctionsaretransferredto
othernodes.
Note:Allnodesofaclustermustbeofthesameseries.Aclustercannot
be
madeupofadifferentmodelsofstorageservers.
BoththeIS‐NASServerandtheTitanServerarerackmountableandcontain
threehot‐swappablefanassemblies,andtwohot‐swappableredundant
powersupplies.Thefrontpanelofeachstorageserverdisplayssystemstatus
withagreenpowerLED
andanamberfaultLED.Therearpanelhas
additionalstatusLEDs,andincludesconnectors(power,Ethernet,Fibre
Channel,RS‐232).SeetheHardwareReferenceforyourseriesofstorageserver
formoreinformationaboutthestorageserverhardware.
Virtual Servers (EVSs)
AllfileservicesareprovidedbylogicalserverentitiesreferredtoasEVSs
(virtualservers).Aserverorclustersupportsupto64EVSs.EachEVSis
assigneduniquenetworksettingsandstorageresources.Inclusters,EVSsare
automaticallymigratedbetweenserverswhenfaultsoccurtoensure
maximumavailability.Whenmultiple
serversorclustersareconfiguredwith
commonstorageaccess,theyarereferredtoasserverfarms.EVSscanbe
manuallymigratedbetweenserversinaServerFarmbasedonperformance
andavailabilityrequirements.
Private Management Network
Tominimizetheperformanceimpactofauxiliarydevices,aprivate
managementnetworkconnectstheSMUanddevicessuchasFCswitches,and
uninterruptiblepowersupply(UPS)units.Theprivatemanagementnetwork
connectstheprivatemanagementinterfaceoftheSMU,theEthernet
managementinterfaceonthestorageserver(s),andallofthe
Ethernet
manageddevicesthatmakeupthestoragesystem.
Theprivatemanagementnetworkisisolatedfromthepublicdatanetworkby
theSMU,whichusesnetworkaddresstranslation(NAT)technology.Devices
ontheprivatenetworkareonlyaccessiblefromthepublicdatanetwork
throughtheSMU,whichprovidesNAT,NTP,
andemailrelayservices.