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VAST Metrics

This page catalogs the storage telemetry metrics collected from VAST Storage appliances via the Prometheus-compatible exporter. These metrics are scraped by vmagent and stored in VictoriaMetrics.

Collection method

Property Value
Collection tool VAST Prometheus Exporter
Protocol Prometheus scrape over HTTPS
Default port 443
Metrics path /api/prometheusmetrics/all
Default interval 30 seconds (configurable via scrape_interval in telemetry_config.yml)
Storage VictoriaMetrics time-series database

Storage performance metrics

Metric Unit Description
vast_read_throughput Bytes/s Read throughput in bytes per second.
vast_write_throughput Bytes/s Write throughput in bytes per second.
vast_read_iops IOPS Read I/O operations per second per volume.
vast_write_iops IOPS Write I/O operations per second per volume.
vast_read_latency Microseconds Average read latency per operation.
vast_write_latency Microseconds Average write latency per operation.

Capacity metrics

Metric Unit Description
vast_capacity_total_bytes Bytes Total storage capacity.
vast_capacity_used_bytes Bytes Storage capacity currently consumed.
vast_capacity_avail_bytes Bytes Storage capacity available for allocation.
vast_capacity_thin_provisioning_ratio Ratio Thin provisioning ratio (logical / physical).

Volume metrics

Metric Unit Description
vast_volume_state Enum Volume operational state.
vast_volume_read_iops IOPS Per-volume read I/O operations per second.
vast_volume_write_iops IOPS Per-volume write I/O operations per second.
vast_volume_read_bw Bytes/s Per-volume read throughput.
vast_volume_write_bw Bytes/s Per-volume write throughput.
vast_snapshot_count Count Number of snapshots per volume.

Device metrics

Metric Unit Description
vast_device_health Enum Device health status (healthy, degraded, failed).
vast_device_read_iops IOPS Per-device read I/O operations per second.
vast_device_write_iops IOPS Per-device write I/O operations per second.
vast_device_errors Count Total device error count.

Cluster health metrics

Metric Unit Description
vast_node_status Enum Node health status (online, offline, degraded).
vast_cluster_connectivity Enum Cluster network connectivity status.
vast_replication_status Enum Data replication status.

Telemetry health metrics

Metric Unit Description
scrape_duration_seconds Seconds Duration of the Prometheus scrape for VAST endpoint.
up Enum Whether the VAST scrape target is reachable (1=up, 0=down).

Metric labels

All VAST metrics include the following common labels:

Label Description
instance VAST appliance endpoint (IP:port).
volume Volume name (volume-level metrics only).
device Device identifier (device-level metrics only).
node VAST cluster node identifier.

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