When you create three TI pairs using the 500 GB (500 x 1024 MB) volume as
the P-VOL, the TI pair capacity is calculated as follows:
↑(500 × 1,024 × 3 × 2 ÷ 42)↑ × 42 + ↑(500 × 1,024 × 3 × 2 ÷
2,921,688)↑
× 175,434 = 3,422,874 (MB)
Afterward, if you delete two pairs, the maximum number of TI pairs you can
create in the applicable snapshot tree is the same: The TI pair capacity does
not change.
Also, if you you split pairs twice, the maximum number of TI pairs you can
create in the snapshot tree is the same, and the TI pair capacity remains
unchanged.
Thin Image system and planning requirements 79
Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series