You are designing a backup solution for an EMC NetWorker customer. Given a conservative
estimate, how many CPU cycles are needed by the storage node when backing up clients over the
network to local tape drives at a rate of 100 MB/s?
A.
0.2 GHz
B.
0.5 GHz
C.
1 GHz
D.
2 GHz
ReferencE.http://nsrd.info/documentation/nw76/76_performance_tuning.pdf(page
13, CPU requirements, first paragraph)
“Given a conservative estimate of 5 MHz per 1 MB of data movement per second, it would require 1 GHz of CPU power to move data to a device at a rate of 100 MB/s. This is due to the fact that I/O is a two part process – input and output. The storage node will require 500 MHz to ingest the data from the client into the storage node and an additional 500 MHz to output the data to the device.” – p26 NetWorker Solutions Design
Making the answer C
0
0