Thin provisioning technology allows you to allocate virtual storage capacity based on anticipated future capacity needs, using virtual volumes instead of physical disks. Thin provisioning is an optional provisioning strategy for your storage systems. Thin provisioning is implemented by creating one or more
Dynamic Provisioning pools (HDP pools) of physical storage space.
The advanced provisioning software products and features of the storage systems enable you to implement the appropriate provisioning strategies for your operational environment and improve performance and capacity utilization.
Dynamic Provisioning allows you to reserve virtual storage capacity based on anticipated future capacity needs using virtual volumes instead of physical disk capacity, providing lower initial cost, greater efficiency, and ease of storage management.
Hitachi Dynamic Tiering (HDT) simplifies storage administration by automatically optimizing data placement in 1, 2, or 3 tiers of storage that can be defined and used within a single virtual volume. Tiers of storage can be made up of internal or external (virtualized) storage, and use of
HDT can lower capital costs. Simplified and unified management of
HDT allows for lower operational costs and reduces the challenges of ensuring applications are placed on the appropriate classes of storage.
Dynamic Provisioning monitors pool capacity using thresholds. A threshold is the proportion (%) of the used capacity of the pool to the total capacity of the pool, or the proportion (%) of the physical used capacity of the pool to the total capacity reserved for writing of the pool.
