FileShare witness vs. Disk witness

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

??? ???? Cluster? Quorum Model?? ??? ??? Witness? ???? ???? FileShare? Disk witness? ???? ??? ????? ?????.

FileShare witness? ??? Multi-Site Cluster? ???? ? ?????. ????? Exchange ?? ??? ?????? ?? ??????.

FileShare witness? ???? ?? ??? ???? ?? ??? Witness.log ??? ???? ? Log ??? ?? Quorum Model? ???? ?? ? ?? Vote? ???? ???.

Disk witness? physical disk resource ? ??? ???? Cluster Database? Copy ?? ???? ???.

???, Quorum Model? ???? Node and Disk Majority? Node and File Share Majority? ??? ??? ?????

??? ??? Model? ? ?????

??, Fileshare witness? ???? ? ??(A? B)? ??? Cluster? ????????.

A ??? ??? ??(Shutdown ?? Crash)? ????? B ??? ????? Cluster service? ??? ???.

? ?, Cluster? ??? ????? ???? ???? ??? ???? ?? Cluster Database? ??? ???? ??? ?? ??? ????? ???.

??? ??? Fileshare witness?? ??? ??, Witness.log ??? Timestamp ?? Update ?? ???.

? ???? B ??? ???? A ??? ?????, A ??? Cluster service? ??? Cluster Database? ??? Witness.log ??? Timestamp? ???? ???.

? ?, Fileshare witness? Timestamp? ?? Update ? ???? A ??? ?? ??? ??? ?? ??? ?? A ??? Cluster service? ??? ?????.

??? Prevent Partition-in-Time ??? ???. ?, ??? ???? ?? ??? ?? ??? ??? ???? ????.

??? ??? ???? Disk witness? ???? ???? ??? ????

Disk witness? ???? Disk?? Cluster Database? ???? ?? ????. ??? A ??? Cluster service? ??? ? ?? ??? ??? ???? Disk witness? ?? Cluster Database? ???? ??? ?? ??? Update ?? ???.

???, A ??? Cluster service? ????? ??? ????.

??? Solve Partition-in-Time ??? ???. ?, ??? ???? ?? ??? ??? ?? ???? Cluster service? ????? ????? ???? ????.

????? ?? Multi-Site ?? Shared Physical Disk? ??? ? ?? ??? ???? Solve Partition-in-Time ??? ???? Disk witness? Quorum Model? ????? ?? ?? ???????.

?????.