Новое в кластеризации серверов: ассиметричные хранилища и не голосующие узлы


? ????, ??? ???? ??? ???????????? ?????????????? Hyper-V, ????????? ???? ????????????? ??? ????????? ??????????? ???????? ? ??????????? ????? ? ?????????. ? ?? ?? ????? ? ????? ???? ??????????, ??????? ????? ?????-?? ??????????????? ????? ????? ??????? ?????????????, - ????????, ????? ?????????? ? ?????????? ?? ???? Windows 2000 Server ??? Windows Server 2003. ? ?????? Windows Server 2008 ???? ????????????? ????? ??????????? ????? ? ??????????. ???? ????? ????????????? ??????????? ????????? ????????????, ?????? ?????????? ???? ?????? ?????? ????????? ?? ????? ???????. ? ?????????? Windows Server 2008 R2 ??????? ????????????? ??????? ?????????? Cluster Shared Volumes, ???????? ????????? ????????????? ??????? ???? ??? ???????? ??????????? ?????, ?????????? ???????????? ?? ?????? ? ?????? ?? ???? ????? ????????.

?????????? ?? ????? ?? ?????. ?????? ????? ?????????? ?????? ????????? ????????????? ????????, ? ?????????? KB2494036 ??????????? ??????, ????? ???? ???????? ???????? ???????????, ? ????? ???. ?????????? ??? ??????? ??????????

Windows Server 2008 R2 Service Pack 1: Asymmetrical Storage

? ??????? ??????? ?????? ?????????? ??? Windows Server 2008 R2 ? Hyper-V Server 2008 R2 ? ??? ????????? ??????????? ???????????? ????? ???????? ???????, ??????? ???????? ???? ????????? ????? ????????. ????? ??? ???? ????? ?? ?????? ???????? ???? ? ???????, ?? ?????? ??? ???? ???????? ?? ?????? ? ?????? ?? ???? ????? ????????. ??? ?????? ?????????? ??????????, ???? ????????????? ???????, ???? ???????? ??????????? ?? ????? ????????. ??? ?? ?????? ? ?????? ?????????? ?????????????? ??????????????? ???????? (?????? «??????????», ????? ???????????? ??? ????? ??????? ??????????? ????? ????????, ??????? ????????? ?????? ????????????? ?? ?????????? ? ??????????? ????? ??????????)? ???? ? ???? ?????? ?????????????? (????????) ?????????, ?????????? ???? ?????, ???????????? ? ?????? ????? ???? ????????? ????????? ??? ????????, ?????????????? ????????????? ? ???? ?????? ? ??????? Service Pack 1 ?? ?????? ???????? ? ??????? ????? ????, ???? ?? ???????? ???? ?? ???? ????? ????????. ????????, ??? ?????????? ??????????? ????? ?????, ? ????? ???? ????????, ????????? ?? ????? ?????, ?????? ???????? ???? ????, ??????? ?????? ?????? ? ?????. ??? ??? ?? ???????????, ???? ? ???, ?????, ????????? ???????? ? ??????? LUN, ?????????????? ???? ????????? ?????. ?????????????? ?????? ?????? ? ???? ???. ?????? ??? ??????? ?????? SQL Server ????? ??????????? ???????? ????????????, ??? ?? ? ????????? ? ???????.

KB2494036: ??????????? ??????, ???????? ?? ???? ?? ???????????? ??????????? ??? ???

? ????????? Windows Server 2008 ? Windows Server 2008 R2 ????? ??????? «???????????». «???????????» ??????????? ??? ??????? ????? ???????? ?????, ??????? ????? ???????? ???? ? ??????. ????? ???????? ??????????? ?? ?????????. ??? ?????? ?????????? ????? ???????????? ?????????????? ????? – ???? ??? ??????? ??????. ?????????? ???????? ?????????????? ??????????????? ????????: ????????? ????? ? ???????? ??????????, ????????? ? ?????????. ????????, ??? ???? ?????????? ????? ?? ??????, ?? ??? ????????? ? ?????? ????? ????? ??????????, ??? ???? ???? ???, ??? ????? ?????? ???????? ???????? ???? ?? ????????, ??? ??? ?? ????? ????? ??????????? ???????. ???? ?????????? ????? ??????… ?? ?? ????? ?? ???? ?? ?? ????????, - ?? ???? ?? ??? ?? ????? ???????????, ??? ????????? ? ????? ????? ?????????? ??? ???? ???????? ????????? ????. ??? ?????? ???????? ?????? ??, ??? ???????, ?????????? ????? ??????? ??????, ??? ?????????????? ?????. ? ???????????? ????????????? ???? ????? ?????????? witness. Disk witness ??? file share witness. ? ???????? ?????????????? ??????????????? ???????? ???????? ?????? ??????? ?????????? ??????????, ???, ??? ???????, ?? ???????????, ? ??????? ?????? ?????? ????????????? ?? ????? ??????? ????????. ??????? ????????, ??? ???, ? ???? ?????????? 2494036. ??? ?? ??? ?????????

???????? NodeWeight

????? ????????? ?????????? 2494036 ?? ?????? ? Windows Server 2008 R2 Service Pack 1 ??? Windows Server 2008 Service Pack 2 ? ????????? ????? ???????? ?????????? ????? ???????? NodeWeight. ???? ???????? ????? ????????? ???????? 1 ??? 0. ???????? 1 ???????? ?? ?????????, ? ??? ???? ??? ????? ?????????? ????? ????, ??? ?????, ????? NodeWeight = 1. ?? ?????? ??????? ??? ?????? ???? ?????? ???????? NodeWeight = 0 ???????? Cluster.exe . node <NodeName> /prop NodeWeight=0 ??? ???????? PowerShell: (Get-ClusterNode "NodeName").NodeWeight = 0

?????????? ????????? NodeWeight ??? ??????? ???? ???????? ????? ???????? PowerShell: Get-ClusterNode "NodeName" | fl *

???????? NodeWeight ????? ???????? ? ????? WMI ????? MSCluster_Node.

???? PreventQuorum (PQ)

? ?????????? ? ?????? ????????? ???? ???? ?????????? ??????????? ??????? ?????? ???????? ? ?????? PreventQuorum, ????? ?????? ??? ?????? ?? ????????? ???????????? ?????? ??? ??????? ???? ????????.

????????

?????????? ????????, ????? ??? ???????????? ????? ???? ????????. ????????? ????????? ???? ?????? ???????? ?? ??? ????????. ????? ?? ????? ???? ????? ? ???????? ??? ? ???? ? ?????????. ??? ????????????? ???????? ??? ?????????? ????? ??????? ?????? ?? ????? ??????? ????????, ??????? ????? ??????, ????? ?? ???????? ????? ???????????, ? ?????? ???????? ?? ?????? ????? ????. ????????, ???? ?? ??? ????? ?????? ? ????? ???????? ???????, ?? ?????????? ???????????, ?????? 6 ??????? ?? 11. ??? ?????????? ? ?????? ???????????? ?????? ?? ????? ? ???? ?????! ????????? ???? 5 ????? ?? 11, ??? ?? ???????????, ??????? ????????? ????.

????????, ??? ? ?? ?? ????? ????????? ????????? ???, ???????? ? ??????? ????? ????????? ??????? ??????????? ???????? ? ???????? ???. ?????? ? ??? ???? ??????? ??????? ????????. ?? ?????? ??? ???? ????? ?????????? ??? ??????? ???????? NodeWeight ?????? 0. ??? ???? ?????? ??? ?? ????? ??????? ?????? ?? ??????? ????????. ???? ????????? ??? ????? ??????????, ?? ??? ?? ???????? ?? ?????? ???????? ? ???????? ???. ???? ???? ???? ??? ??? ??????? ? ???????? ??? ????? ?????????? ??? ????????????? ????? ?????????? ???, ??????? ????????? ??????: ???? ??? ???? ?? ?????????? ???? ????????? ???????????!

??? ??????, ???? ???????? ??? ???? ??????????, ????????, ? ???? ??????? ? ???????????????? ? ????????? ??? ? ??? ???? ???? ?????, ??????? ??? ????????????? ????????? ??? ????????? ????. ???? ?? ????? ????? ????????? ? ?????? ForceQuorum. ???? ???? ?????????? ???? ? Windows Server 2008 R2, ? ?????????? ? Windows Server 2008 SP2 ????? ????????? ?????????? 2494036. ????, ?????????? ? ForceQuorum ?????????? ???????????, ????????? ???? ????????????? ? ????, ???????? ?? ??, ??? ??? ?? ????? ???? ?? ????? ??????????? ??????? ? ????????. ??? ?????? ????????? ? ?????????? ?????? ????????, ? ?? ??????? ?????? ?????? ????? ???????????? ?????? ????????? ????

???? ???? ????????? ??? ????? ??????????, ????? ??????? ? ????????? ??? ??? ??????????? ? ????????, ??? ????????????? ? ???? ??? ???????. ??? ??????, ???? ????????????? ?????????????, ?? ???? ??? ?????, - ? ???????? ??? ?? ????? ???? ?????, ??????? ????? ???????????? ??????????? ???? ??????? ? ??? ???????? ? ????????? ???? ??? ????????????? ?????? ??????? ???? ? ???????? ??? ??????? ????????? ? ?????? PreventQuorum. ?????? ???????? ?? ??? ????????, ?? ??? ?? ????? ????????? ???????????? ???????????, ????? ???? ?????? ??????????? ? ??????? ?????????. ? ????? ??????, ????? ????????????? ????? ????? ????? ??????????, ??? ????????????? ? ????????, ????????????? ???? ??????? ? ????????? ???, ? ??????????? ?? ???? ??? ?????????.

?????????? ??? ????? ????????? ? ????? ?????????.

???????, ? ?????????? ???????? ?????? ??? ????????????, ? ??? ??????? ??? ??????????? ? ?????? ? ??????? ????????????? ? Windows Server 2008 R2 Service Pack 1.

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