What are the maximum drives and shelves limits in a mixed ONTAP shelf stack
Applies to
- ONTAP 9
- Disk Shelves
Answer
Homogeneous Shelf Module Type Within Stack
Configurations must conform to all of these rules:
1) Must not exceed the maximum drive count that the AFF, ASA or FAS controller supports
2) Must not exceed 240 drives for HDD or HDD/SSD hybrid stack, 96 drives for a SSD stack
3) Must not exceed 10 shelves in a stack path (integrated storage counts as a shelf)
4) In a HDD / SSD hybrid stack, SSDs should be on the ends of the stack
Heterogenous Shelf Module Type Within Stack
Refer to Hot-add IOM12/IOM12B shelves to a stack of IOM6 shelves for stack and cabling rules.