Which storage medium is typically used for archival backups?

Which storage medium is typically used for archival backups?

• A. Tape drives are typically used for archival backups.
• B. RAM modules are typically used for archival backups.
• C. CPU caches are typically used for archival backups.
• D. SSD drives are typically used for archival backups.

Answer: (A)

Archival backups prioritize long-term preservation and cost efficiency over instant access. Magnetic tape fits this need well because each cartridge can hold very large amounts of data, it’s relatively inexpensive, and tapes can be stored offline in a controlled environment to protect against environmental factors and online threats. Modern tape systems also offer good data integrity features and scalable capacity as archives grow, making it practical to store extensive histories of data for years or decades. RAM modules hold data only while power is on and are designed for fast, temporary storage used by active programs; they lose data when the system powers down, so they aren’t suitable for backups. CPU caches are tiny, ultra-fast storage integrated into the processor to speed up access to frequently used data, not for long-term preservation. SSD drives provide fast access and reliability for everyday data and some backup tasks, but their higher cost per gigabyte and finite write life make them less ideal for large-scale, long-term archival storage compared with tape.

Archival backups prioritize long-term preservation and cost efficiency over instant access. Magnetic tape fits this need well because each cartridge can hold very large amounts of data, it’s relatively inexpensive, and tapes can be stored offline in a controlled environment to protect against environmental factors and online threats. Modern tape systems also offer good data integrity features and scalable capacity as archives grow, making it practical to store extensive histories of data for years or decades.

RAM modules hold data only while power is on and are designed for fast, temporary storage used by active programs; they lose data when the system powers down, so they aren’t suitable for backups. CPU caches are tiny, ultra-fast storage integrated into the processor to speed up access to frequently used data, not for long-term preservation. SSD drives provide fast access and reliability for everyday data and some backup tasks, but their higher cost per gigabyte and finite write life make them less ideal for large-scale, long-term archival storage compared with tape.