At the time of the implementation on a VSP Gx00, 4 Parity Groups (RAID5 6D-1P of 6.4TB with FMD Disk) had been created with the option "Accelerated Compression" active.
This made each PG to be:
* Physical Size: 38.4TB
* Logical Size: 307.2TB using the ratio (8: 1)
110 LDEVs of 2.79TB were created for each PG. A DP Pool was created using the 440 LDEVs with a total logical capacity of 1228.8 TB
Currently the percentage of saving that the pool with the FMD is ~ 40%.
Adding 7 FMD Disks of 6.4TB is made, a new PG is created (RAID5 6D-1P).
The question is: To extend the actual DP pool with this new PG, is it necessary to create another 110 LDEVs, as was done at the implementation? Or is it necessary to perform a readjustment in the pool and/or in the actuals LDEVs or to be created for the expansion to reflex real ratio of 2:1?