SAN - Fabric overview

This dashboard displays central metrics and information for SAN Fabrics. It provides a basic overview of the selected SAN Fabric in terms of throughput, topology counters, performance metrics & error counters.

The charts have thresholds, that should not be exceeded. If they are exceeded, you can use the existing data very quickly to start an analysis on the BVQ GUI or request an expert analysis.

Panels:

  • Fabric topology statistics:
    • SAN Switches: Current number of SAN Switches in the selected fabric
    • Trunks: Current number of SAN Trunks in the selected fabric
    • ISLs: Current number of SAN ISLs (inter switch links) in the selected fabric
    • Ports: Current number of SAN Switch ports in the selected fabric
    • Connected ports: Current number of connected (used) switch ports in the selected fabric
    • Disconnected ports: Current number of disconnected (unused) switch ports in the selected fabric
  • Fabric Data rate statistics:
    • Maximum (max), average (avg) and current (cur) throughput in MB/s for the selected SAN Fabric and time range (default: last 12h)
  • Switch Data rate Rx+Tx:
    • Shows aggregated receive and transmit (one line for both) data rate in MB/s for each SAN Switch in the selected fabric
    • Check highly utilized switches (in comparison to other switches in the graph) for a deeper analysis with the BVQ expert GUI
  • F-Port Data rate Rx and Tx utilization %:
    • Shows receive and transmit (one line each) peak data rate in % for all F-Ports in the selected fabric
    • Check highly utilized F-Ports for a deeper analysis with the BVQ expert GUI
    • Each direction (Rx/Tx) is able to use the full bandwidth of a FC port (e.g. 800MB/s for a 8 Gbit/s port)
    • Threshold watermarks show warning when > 80% & critical when > 90%
  • E-Port Data rate Tx utilization %:
    • Shows peak transmit data rate in % for all E-Ports (ISLs) in the selected fabric
    • Check highly utilized E-Ports for a deeper analysis with the BVQ expert GUI (especially when reaching bandwidth limitations)
    • In this graph only Tx is shown, because the opposite port will show the Rx (and vice versa), so usage would be doubled and connected E-Ports would show the same value
    • Threshold watermarks show warning when > 80% & critical when > 90%
  • F-Port / E-Port buffer credit wait %:
    • Shows peak buffer credit wait % for all F-Ports or E-Pots (ISLs) in the selected fabric
    • Check high percentage values (> 10%) for a deeper analysis with the BVQ expert GUI (especially on E-Ports this might lead to a performance degradation)
    • Threshold watermarks show warning when > 10% & critical when > 20%
  • F-Port / E-Port error counter:
    • Shows most common peak error counters for F-Ports / E-Ports
    • Frame discards RxTO / TxTO: FC frames dropped by the F-Port / E-Port due to timeout
    • CRC errors (good end of frame (GEOF)): Cyclic redundancy check (checksum) errors within in FC frames
    • Encoding errors In+Out: Encoding errors inside (in) and outside (out) of FC frames
    • Check F-Ports / E-Ports with error counter > 0 for a deeper analysis with the BVQ expert GUI (especially on E-Ports these error counters might lead to a performance degradation)
    • All these errors may indicate a logical or physical (hardware) problems

Usage

  • Use Interval selector to choose different interval settings (smaller for shorter time range / greater for longer time range)
  • Use Agent selector on top to choose the requested SAN Agent (BNA) instance
  • Use Fabric selector on top to choose the requested SAN Fabric

Possible adjustments:

  • In the template a filter can be established, so that only selected SAN Agents or SAN Fabrics become selectable for this dashboard
  • Further error counters can be added to the error counter graphs

Hints & restrictions:

  • This dashboard can only show one SAN Fabric at a time. Use multiple tabs and rotate tabs to view multiple fabrics
  • Each Panel has it's own additional help text
  • Find more wallboard SAN dashboards with the More SAN button top right


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