DDP capacity splitter for E-Series

NOTE: the Web site with this tool was improved and updated on 2024/04/19, so some details below may differ from current functionality

Since mid 2022 it's possible to create smaller DDPs (Dynamic Disk Pools) on SSD-based E-Series arrays. I blogged about it here.

As mentioned in that post, the DDP improvement (the ability to use 8-10 disks) is still available only via the SANtricity API and not in the Web UI.

The official NetApp sizing tools for E-Series can't yet calculate the split between RAID 1-like and RAID 6-like volumes created within a DDP.

DDP Capacity Splitter lets you do that and it also lets you guesstimate the effect of additional over-provisioning that may be required for unusually write-heavy workloads.