Data reduction features include:
- Thin devices—All PowerMax storage devices are created thin by default, which means that storage capacity is allocated only when the application writes to them.
- Compression and deduplication—The PowerMax Adaptive Compression Engine (ACE) provides inline storage compression and deduplication. Hardware modules support both compression and deduplication to provide high-performance, together with other software features such as Activity Based Compression (ABC) and Fine-Grain Data Packing.
For more information, see PowerMax compression and deduplication.
- ASM online storage reclamation—Oracle ASM Filter Driver (AFD) enables you to declare ASM disk groups as capable of online storage reclamation. If large data sets are deleted within ASM (for example, if a legacy database is deleted), the PowerMax storage system frees up the deleted capacity within the storage system, even while the ASM disk group remains online.
For more information, see Appendix II. Oracle ASM online storage reclamation.