PowerFlex How to Monitor Storage Pool Bandwidth and Throughput using REST API

Summary: This article explains how to monitor Storage pool bandwidth using REST API.

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Instructions

In order to see the current IOPS and Kb/s statistics per Storage Pool using REST, use the following API:

 /api/instances/StoragePool::xxxxxxxxxxx/relationships/Statistics

It returns Storage Pool statistics, among the other following "*Bwc" entries for each type of traffic (primary reads, writes, rebalance, rebuild, and so forth):

(...)
    "primaryWriteBwc": {
        "numOccured": 219,
        "numSeconds": 5,
        "totalWeightInKb": 111884
    },
(...)

To get the number of IOPS for each type of traffic divide "numOccured" by "numSeconds", to see Kb/s divide "totalWeightInKb" by "numSeconds" - for this example:

 
 
    "primaryWriteBwc": {
        "numOccured": 219,
        "numSeconds": 5,
        "totalWeightInKb": 111884
    },

===================
<<< Calcuation >>>
219/5 = ~43 IOPS
111884/5 = ~ 22376 Kb/s

Additional Information

The scli --query_storage_pool command produces the following output, allowing us to see the amount of traffic is going on against each Storage Pool:
There are no such counters in the REST API and these values must be calculated.

(...) 
        Primary-reads                            5365 IOPS 21.0 MB (21461 KB) per-second
        Primary-writes                           41 IOPS 20.9 MB (21425 KB) per-second
        Secondary-reads                          0 IOPS 0 Bytes per-second
        Secondary-writes                         40 IOPS 20.4 MB (20870 KB) per-second
        Backward-rebuild-reads                   0 IOPS 0 Bytes per-second
        Backward-rebuild-writes                  0 IOPS 0 Bytes per-second
        Forward-rebuild-reads                    0 IOPS 0 Bytes per-second
        Forward-rebuild-writes                   0 IOPS 0 Bytes per-second
        Rebalance-reads                          0 IOPS 0 Bytes per-second
        Rebalance-writes                         0 IOPS 0 Bytes per-second

Affected Products

PowerFlex rack, VxFlex Product Family

Products

PowerFlex Appliance, PowerFlex Software
Article Properties
Article Number: 000014438
Article Type: How To
Last Modified: 20 Jun 2025
Version:  7
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