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Storage aggregates UUID metrics endpoint overview

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Overview

The Storage Aggregate Metrics API provides historical performance metrics for the specified aggregate. The collection GET operation retrieves read, write, other and total metrics for a given aggregate, in terms of IOPS, latency and throughput. The read and write categories display the I/O operations that service user reads and writes across all the hosted volumes on a given aggregate. The other category encompasses background I/O operations that implement data protection services currently running on the aggregate. IOPs are the number of I/O operations reported per second, throughput is the amount of I/O operations measured in bytes per second and latency is the average response time for an IOP, reported in microseconds. Without a specified time interval, the output is limited to statistics collected at 15 second intervals over the last hour.

Examples

Retrieving metrics for an aggregate

In this example, the API returns a set of records that exist for the aggregate with the given UUID for the last hour.

# The API:
/api/storage/aggregates/{uuid}/metrics

#The call:
curl -X GET "https://<mgmt-ip>/api/storage/aggregates/538bf337-1b2c-11e8-bad0-005056b48388/metrics" -H "accept: application/json"

#The response:
{
"records": [
  {
    "timestamp": "2019-01-14T23:33:45Z"
  },
  {
    "timestamp": "2019-01-14T23:33:30Z"
  },
  {
    "timestamp": "2019-01-14T23:33:15Z"
  },
  {
    "timestamp": "2019-01-14T23:33:00Z"
  },
  ...
],
"num_records": 240
}

Retrieving metrics for an aggregate with a set timestamp

In this example, the API returns metric values for latency, IOPS, and throughput properties such as read, write and total. The status and duration for which the metrics are requested are also returned.

#The API:
/api/storage/aggregates/{uuid}/metrics/{timestamp}

#The call:
curl -X GET "https://<mgmt-ip>/api/storage/aggregates/538bf337-1b2c-11e8-bad0-005056b48388/metrics/2019-01-1T23:33:00Z" -H "accept: application/json"

#The response:
{
"uuid": "538bf337-1b2c-11e8-bad0-005056b48388",
"timestamp": "2019-01-01T23:33:00Z",
"status": "ok",
"duration": "PT15S",
"throughput": {
  "read": 6826,
  "write": 205892,
  "other": 0,
  "total": 212718
},
"latency": {
  "read": 148,
  "write": 216,
  "other": 0,
  "total": 199
},
"iops": {
  "read": 1,
  "write": 5,
  "other": 0,
  "total": 6
}
}

Retrieving metrics for an aggregate for a set time interval

In this example, the API returns the requested metrics for the given time interval of 1 week. The interval value can be 1 hour, 1 day, 1 week, 1 month or 1 year. If the interval value is not set, a default value of 1 hour is used.

#The API:
/api/storage/aggregates/{uuid}/metrics

#The call:
  curl -X GET "https://<mgmt-ip>/api/storage/aggregates/538bf337-1b2c-11e8-bad0-005056b48388/metrics?return_timeout=15&fields=*&interval=1w"  -H "accept: application/json"

#The response:
{
"records": [
  {
     "timestamp": "2019-01-01T23:30:00Z",
     "status": "ok",
     "duration": "PT30M",
     "throughput": {
       "read": 268328,
       "write": 5556255,
       "other": 0,
       "total": 5824584
     },
     "latency": {
       "read": 156,
       "write": 430,
       "other": 0,
       "total": 318
     },
     "iops": {
       "read": 18,
       "write": 26,
       "other": 0,
       "total": 45
     }
  },
  {
     "timestamp": "2019-01-01T23:00:00Z",
     "status": "ok",
     "duration": "PT30M",
     "throughput": {
       "read": 474266,
       "write": 6121908,
       "other": 0,
       "total": 6596175
     },
     "latency": {
       "read": 154,
       "write": 448,
       "other": 0,
       "total": 262
     },
     "iops": {
       "read": 48,
       "write": 28,
       "other": 0,
       "total": 76
     }
  },
  {
     "timestamp": "2019-01-01T22:30:00Z",
     "status": "ok",
     "duration": "PT30M",
     "throughput": {
       "read": 540164,
       "write": 2411356,
       "other": 26244685,
       "total": 29196206
     },
     "latency": {
       "read": 159,
       "write": 394,
       "other": 192,
       "total": 193
     },
     "iops": {
       "read": 94,
       "write": 16,
       "other": 437,
       "total": 548
     }
  },
  {
     "timestamp": "2019-01-01T22:00:00Z",
     "status": "ok",
     "duration": "PT30M",
     "throughput": {
       "read": 2842,
       "write": 2765407,
       "other": 0,
       "total": 2768249
     },
     "latency": {
       "read": 189,
       "write": 540,
       "other": 0,
       "total": 523
     },
     "iops": {
       "read": 0,
       "write": 13,
       "other": 0,
       "total": 13
     }
  },
  ...
],
"num_records": 336
}

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