Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 331 discussion

Don't mix up between Mbps and Mbs. The proper calculation is: 10 MB/s x 86,400 seconds per day x 30 days/8 = 3,402,000 MB or approximately 3.4 TB

Honestly, the company has bigger problem with that slow connection :) 30 days is the first clue so you can get snowball shipped and sent back (5 days each way)

aws snowball은 대용량 데이터 이전하기 위한 것 입니다.

(15/8) = 1.875 MB/s 1.875 MB/s x 0.7 = 1.3125 (70% NW utilization) MB/s 1.3125 MB/s x 3600 = 4725 MB (MB per 1 hour) 4725 x 24 = 113400 MB per 1 full day (24h) 113400 x 30 = 3402000 MB for 30 days 3402000 / 1024 = 3322.265625 GB for 30 days 3322.265625 / 1024 ~ 3.24 TB for 30 days => not enough for NW => Snowball which is A

I wont try to think to much about it, AWS Snowball was designed for this

° 15 Mbps bandwidth with 70% max utilization limits the effective bandwidth to 10.5 Mbps or 1.31 MB/s. ° 20 TB of data at 1.31 MB/s would take approximately 193 days to transfer over the network. ° This far exceeds the 30 day requirement. ° AWS Snowball provides a physical storage device that can be shipped to the data center. Up to 80 TB can be loaded onto a Snowball device and shipped back to AWS. This allows the 20 TB of data to be transferred much faster by shipping rather than over the limited network bandwidth. ° Snowball uses tamper-resistant enclosures and 256-bit encryption to keep the data secure during transit. ° The data can be imported into Amazon S3 or Amazon Glacier once the Snowball is received by AWS.

10 MB/s x 86,400 seconds per day x 30 days = 25,920,000 MB or approximately 25.2 TB That's how much you can transfer with a 10 Mbps link (roughly 70% of the 15 Mbps connection). With a consistent connection of 8~ Mbps, and 30 days, you can upload 20 TB of data. My math says B, my brain wants to go with A. Take your pick.

Aws snowball

A is 100% Crt

AWS Snowball

Option a

ANSWER - A https://docs.aws.amazon.com/snowball/latest/ug/whatissnowball.html

option A