You are designing a cloud$-$based solution that replaces an on$-$prem mission$-$critical SAN storage solution which currently is replicated across two datacenters. The current SAN has a rating of $89\text{'}$s of durability and $49\text{'}$s of availability at their current datacenters. This SAN system is reaching end$-$of$-$life and is to be decommissioned. You have proposed to move the objects into a properly configured and secured S$3$ bucket. However, the board of directors and the CSO have concerns about data durability and reliability of cloud storage. They are pointing to the fact that they are currently using an expensive, HA$,$ and highly durable SAN system for their storage. Which is the best solution?

Advise the client that the best course of action is to purchase a new SAN system, and replicate data from S$3$ to the new SAN system for high availability and durability.

Advise your client that they must replicate their S$3$ bucket to $3$ different regions to achieve durability and high availability on par with their current SAN system.

Advise your client that they should not be moving the infrastructure to the cloud due to potential issues with cybersecurity, and they should consider maintaining or re$-$procuring their on$-$prem datacenters and systems.

Advise your client that Amazon S$3$