A customer plans to deploy N+2:1 protection on a 5-node Isilon cluster. How much capacity will be used to store a 320 KiB file?

Question

Quizplus · Accepted Answer

N+2:1 protection means that the file is divided into 3 data stripes and 2 parity stripes. For a 320 KiB file, each stripe is 64 KiB (320/5). The total storage used is 5 stripes x 64 KiB = 320 KiB for data and 2 stripes x 64 KiB = 128 KiB for parity, totaling 448 KiB. However, the question asks for the capacity used, which includes the overhead, leading to 576 KiB.

A Customer Plans to Deploy N+2:1 Protection on a 5-Node