id author title date pages extension mime words sentence flesch summary cache txt ital-13355 Tallman, Nathan A 21st Century Technical Infrastructure for Digital Preservation 2021-12-20 20 .pdf application/pdf 8730 308 35 Twentieth- century servers often use three main types of storage: file, block, and object. Software-defined storage combines inexpensive hardware with software abstractions to create a flexible, scalable, storage solution that provides data integrity.27 Software-defined storage can use the same pool of disks to present all three of the common types of storage: file, object, and block. cache/ital-13355.pdf txt/ital-13355.txt