Service Levels in Keystone

Contributors netapp-aruldeepa netapp-manini

Keystone offers services to you in a subscription model by providing committed storage capacity and associating it with predefined service levels.

Each service level is defined by its I/O density, which is the ratio of performance (input/output operations per second [IOPS]) and used storage (TiB of stored data), which is IOPS/TiB.

Each volume managed by the Keystone services is associated with a service level. All I/O operations and all used storage on the respective volume are factored into the volume’s I/O density calculation.

Service levels for difference storage types

The service levels for file, block, object, and cloud services are listed here.

I/O density calculations at the volume level are reported to show peak I/O density during the prior week. The peak performance is determined on an hourly time interval. I/O density reports by volume are generated monthly to gauge adherence to the respective service levels.

File and block services

Supported protocols: NFS, CIFS, iSCSI, and FC

Service level

Extreme

Premium

Performance

Standard

Value

Workload type

Analytics, databases, mission-critical apps

VDI, VSI, software development

OLTP, OLAP, containers, software development

File shares, web servers

Backup

Max IOPS/TiB

12,288

4,096

2,048

512

128

Max throughput MBps/TiB

384

128

64

16

4

Latency

<1 ms

<1 ms

<1 ms

<17 ms

<17 ms

Note Note:
  • Throughput performance metrics (applicable only to file and block services) are based on:

    • 32KB block sizes

    • 70% read/30% write IO mix

  • Actual IOPS/TiB and/or MBps/TiB varies based on workload characteristics.

  • Latency does not include application, host, or customer network latency to or from the controller ports.

Object storage

Supported protocol: S3

Service level

Object

Workload type

Media repository, archiving

Target IOPS/TiB

N/A

Max IOPS/TiB

N/A

Max throughput MBps (32KB/IOP)

N/A

Latency

N/A

Note Note:
  • Actual IOPS/TiB and/or MBps/TiB varies based on workload characteristics.

  • Latency does not include application, host, or customer network latency to or from the controller ports.

Cloud storage

Supported protocol: NFS, CIFS, iSCSI

Service level

Cloud Volumes ONTAP®**
(all cloud)

Workload type

Disaster Recovery, software development/testing, business apps

Target IOPS/TiB

N/A

Max IOPS/TiB

N/A

Max throughput MBps (32KB/IOP)

N/A

Latency

N/A

Note Note:
  • Cloud native services, such as compute, storage, networking, are invoiced by the cloud providers.

  • These services are dependent on the cloud storage and compute characteristics.