Log monitoring consumption

The Davis data units (DDUs) model counts all incoming events from your log data. Each log event (log line, message, event, etc.) deducts 0.0005 DDU from your available quota. 1 GiB ingest is an equivalent of 1 million log events. This translates into 1 million log events x 0.0005 DDU weight = 500 DDUs per GiB ingest. For an entire year this means 500 DDUs x 365 days = 182.5k DDUs/year (total ingest of 365 GiB of log data).

Dynatrace counts the following as log events:

  • Each log line or message
  • Each log line that has an attached stack trace

Log consumption

Automated conversion of existing log storage to DDUs

For existing customer accounts that were created with Dynatrace version 1.207 and earlier, your existing quota of log storage will be automatically converted into an equivalent amount of DDUs. There's nothing you need to do to trigger the conversion.

Accounts created with Dynatrace version 1.208+ consume DDUs for Log Monitoring by default and so no conversion is required.

SaaS example (version 1.207 and earlier)

Say you have 450 GiB of annual average log storage size and the retention period is set to 30 days. The anticipated average daily ingestion of log data in this case would be 15 GiB. Each Dynatrace environment (SaaS or Managed) comes with 5 GB of log data storage, per year at no cost to you.
450 GiB (base quota of annual average storage) / 30 (days) = 15 (GiB anticipated average daily ingestion)

SaaS example (version 1.208+)

DDU conversion applies to paid Log Monitoring quotas that were established with Dynatrace version 1.207 and earlier. A free tier of 200k (equivalent of ~1GiB ingest per day) is provided for these environments.
1 GiB ingest = 1 million log events
15 GiB data ingest = 15 million log events
15 million log events x 365 days x 0.0005 log weight = 2.737M DDUs/year (= total ingest is 5,475 GiB data/year)

Dynatrace Managed example (version 1.206 and earlier)

Say you have 15 GiB per day of annual average ingestion. Each Dynatrace environment (SaaS or Managed) comes with 5 GB of log data storage, per year at no cost to you.

Dynatrace Managed example (version 1.208+)

DDU conversion applies to paid Log Monitoring quotas that were established with Dynatrace Managed version 1.206 and earlier. A free tier of 200k (equivalent of ~1GiB ingest per day) is provided for these environments.
1 GiB ingest = 1 million log events
15 GiB data ingest = 15 million log events
15 million log events x 365 days x 0.0005 log weight = 2.737M DDUs/year (= total ingest is 5,475 GiB data/year)

More examples

SaaS conversion
Per GB of annual average storage size 30 60 150 300 450
GiB anticipated avg. daily ingestion 1 2 5 10 15
GiB anticipated avg. annual ingestion 365 730 1 825 3 650 5 475
Total log lines/events 365,000,000 730,000,000 1,825,000,000 3,650,000,000 5,475,000,000
Total DDUs 182,500 365,000 912,500 1,825,000 2,737,500
Required DDU packages 0.18 0.37 0.91 1.83 2.74
Managed conversion
GiB per day of annual average ingestion 1 2 5 10 15
GiB ingest in 365 days 365 730 1 825 3 650 5 475
# of events per year 365,000,000 730,000,000 1,825,000,000 3,650,000,000 5,475,000,000
Total required DDUs 182,500 365,000 912,500 1,825,000 2,737,500
Required DDU packages 0.18 0.37 0.91 1.83 2.74

FAQs