When creating a pool, use the basic option to take advantage of tiers that are based on best practices.
If you want more flexibility and do not need to take advantage of best practices, you can use the advanced option to select specific parity groups.
The pool types are as follows:
- DP (Dynamic Provisioning), which allocates virtual volumes to a host and uses the physical capacity that is necessary according to the data write request.
- Tiered, which is used with Dynamic Provisioning and places data in a hardware tier according to the I/O load. For example, a data area that has a high I/O load is placed in a high-speed hardware tier, and a data area that has a low I/O load is placed in a low-speed hardware tier.
- HTI (Thin Image), which stores snapshot data in pools. A pool consists of multiple pool-VOLs. The pool-VOLs contain the snapshot data. A pool can contain up to 1,024 pool-VOLs.