NT-SwiFT: Software Implemented Fault Tolerance on Windows NT

Outline

Software fault tolerance

Replication styles for rollback recovery

Error Recovery

Design philosophy

Client error recovery

Server error recovery

watchd

libft

libwinckp(winckp)

REPL.sys

ONEIP.sys

Winrecord.exe

Libft APIs for warm backups

Status

Why re-implemented?

Implementation Notes

watchd

libwinckp

ONE-IP driver

Remarks

Future activities