Make notes for disaster recovery
RPO(Recovery Point Objective) is focus on the loss of data;
RTO(Recovery Time Objective) is focus on the loss of service.
Some solutions for disaster recovery:
1.Disk array copy technology(EMC SRDF,IBM PPRC,HP BusinessCopy,HDS TrueCopy);
2.Storage volume copy technology(Veritas VVR);
3.Datatabase copy technology(DSG RealSync,Quest SharePlex);
4.Application copy technology.
You should pay attention to three key considerations:
TCO(Total Cost of the Ownership)
ROI(Return On Investment)
BCM(Business Continuity Management)
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