A company is planning to implement a backup and archiving solution. They have the following requirements: - Corrupt data files must be restored within seconds - Archived data must be available for…

Remote replication for backup data introduces network latency and depends on WAN availability, making sub-second restores unreliable compared to local disk-based backup storage.

Remote replication for archived data incurs continuous bandwidth and storage costs over 15 years, making it prohibitively expensive and operationally complex compared to offline tape vaulting.

Tape-based storage for backup data cannot satisfy the requirement to restore corrupt files within seconds because tape access is sequential and mount times alone typically exceed that threshold.

Tape-based storage is the correct medium for 15-year archival because LTO tape has a documented media life of 30 or more years, a very low cost per gigabyte at scale, and is easily transported off-site for geographic redundancy. Tape cartridges can be vaulted at a third-party facility, directly satisfying the off-site requirement without ongoing network bandwidth costs.

Disk-based storage for backup data is required because spinning disk and flash provide random-access retrieval with millisecond latency, making it possible to restore corrupt files within seconds. Tape requires physical mount and sequential seek operations that typically take minutes, making it incompatible with the seconds-level RTO specified for backup restores.

Disk-based storage for archived data is cost-prohibitive over a 15-year retention period and offers no practical advantage over tape for data that is rarely accessed after initial archival.