Exploring teraspace storage

A teraspace is a new temporary storage area, which provides a single process up to 1 TB (where TB equals 1,024 GB, GB equals 1,024 MB) of private storage. Teraspace storage overcomes the size limitation of segmented storage and thus meets the needs of memory intensive applications for large, contiguous storage. Teraspace storage also supports memory mapping. Memory mapping is used to efficiently access single-level storage objects, such as files, via memory accesses. This white paper discusses an evolutionary path to enhance the storage model for AS/400 applications and how teraspace storage is being employed within OS/400 for tasks as diverse as manipulating large performance data collections to efficiently handling large journal entries.