A company is planning to deploy synchronous array-based remote replication between two sites
over 13 MB/s ESCON links. The two sites are 50 miles apart. The workload profile of the
application is as follows:
Peak work load = 3,000 I/Os per second
Read/Write Ratio = 70:30
Write I/O block size = 8 KB
1 ms latency is added for every 125 miles
If the delay per channel extender is 0.5 milliseconds (ms) and one round trip (ESCON) equals four
passes, what is the link service time of this solution?

A.
1.8 ms
—–B. 2.6 ms

C.
3.4 ms

D.
4.2 ms