A 300 GB database needs two local replicas for reporting and backup. There are constraints in provisioning
Question:
A 300 GB database needs two local replicas for reporting and backup. There are constraints in provisioning full capacity for the replicas. It has been determined that the database has been configured on 15 disks, and the daily rate of change in the database is approximately 25 percent. You need to configure two pointer-based replicas for the database. Describe how much capacity you would allocate for these replicas and how many save volumes you would configure.
An organization is planning a data center migration. They can only afford a maximum of two hours downtime to complete the migration. Explain how remote replication technology can be used to meet the downtime requirements. Why will the other methods not meet this requirement?
A host generates 8,000 I/Os at peak utilization with an average I/O size of 32 KB. The response time is currently measured at an average of 12 ms during peak utilizations. When synchronous replication is implemented with a Fibre Channel link to a remote site, what is the response time experienced by the host if the network latency is 6 ms per I/O?
Probability & Statistics for Engineers & Scientists
ISBN: 978-0130415295
7th Edition
Authors: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying