Storage service definitions

Contributors

ONTAP includes predefined storage services that are mapped to corresponding minimum performance factors.

The actual set of storage services available in a cluster or SVM is determined by the type of storage that makes up an aggregate in the SVM.

The following table shows how the minimum performance factors are mapped to the predefined storage services:

Storage service Expected IOPS (SLA) Peak IOPS (SLO) Minimum volume IOPS Estimated latency Are expected IOPS enforced?

value

128 per TB

512 per TB

75

17 ms

On AFF: Yes

Otherwise: No

performance

2048 per TB

4096 per TB

500

2 ms

Yes

extreme

6144 per TB

12288 per TB

1000

1 ms

Yes

The following table defines the available storage service level for each type of media or node:

Media or node Available storage service level

Disk

value

Virtual machine disk

value

FlexArray LUN

value

Hybrid

value

Capacity-optimized Flash

value

Solid-state drive (SSD) - non-AFF

value

Performance-optimized Flash - SSD (AFF)

extreme, performance, value