Skip to main content
NetApp Knowledgebase

What are Common Performance Terms for Data ONTAP?

Views:
136
Visibility:
Public
Votes:
0
Category:
data-ontap-8
Specialty:
perf
Last Updated:

 

Applies to

Data ONTAP 8.X

ONTAP 9.X

 

Answer

  • Throughput - Rate of data transmitted over a communication channel, often interchanged or confused with Bandwidth
    • Units
      • Ops/sec
      • Bytes/sec
      • MB/sec
      • GB/sec
  • Bandwidth - The maximum possible rate of data that can be transmitted over a communication channel, often interchanged or confused with Throughput
    • Units
      • Bytes/sec
      • MB/sec
      • GB/sec
  • Latency - The total time since an input or command is issued and the response is received
    • Units
      • seconds (sec)
      • milliseconds (ms)
      • microseconds (us)
  • Utilization - A measurement of the amount of time in a sample period that a given resource was utilized; utilization is a useful metric of performance, but for Data ONTAP should not be the primary metric
    • Units
      • %
  • Bottleneck - The point of congestion in a computing system that impacts performance, there might be more than one bottleneck in an environment
    • NetApp Technical Support looks to address the bottleneck contributing the most to overall latency first
  • Concurrency - Measurement of the parallelism of workload in a computing system
    • The more parallelism there is in a workload, the more simultaneous operations are “in flight” at any point in time
    • This allows the system to be more efficient in processing work, and complete more operations in less time even with the same latency per op as a low concurrency workload
  • Randomness - Refers to a workload that is performed in an unpredicted sequence, with no order or pattern
  • Sequentiality - Refers to a workload that is performed in a predetermined, ordered sequence. Many patterns can be detected: forward, backward, skip counts, etc.

sequential_vs_random

Additional Information

Storage Performance Primer TR

 

CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support