Monitoring the operating status of storage systems

Virtual Storage Platform One Block Administrator User Guide for VSP One Block 20 Series
Version
A3-05-2x
Audience
anonymous
Part Number
MK-23VSP1B001-04
ft:lastEdition
2026-04-06

Monitor storage systems managed by VSP One Block Administrator. You can download the contents of each performance graph as a CSV file.

  • Check the targets you want to monitor.
  • You must have the Storage Administrator (View Only) role.
  1. From the navigation tree, select Monitor > System Monitor.
  2. Select the items to display on the system monitor.
    • Report Type
    • Resource Sub-type

      The Resource Sub-type displayed depends on the item you selected by Report Type.

    • Metric Type displayed depends on the item you selected by Report Type.
      • Volume > Report Type
        IOPS
        The number of input/output operations per second performed on the specified volume.
        Response Time
        The average latency in milliseconds for I/O requests on the volume.
        Transfer Rate
        The data throughput for the volume (MiB/sec).
        Read Hit Rate
        The percentage of read requests that are satisfied directly from cache rather than requiring back end disk access.
      • Port > Report Type
        IOPS (Total)
        The total number of input/output operations per second handled by the port
        IOPS (Input/Read)
        The number of inbound (read) I/O operations per second
        IOPS (Output/Write)
        The number of outbound (write) I/O operations per second
        Response Time (Total)
        The overall average latency in milliseconds for both input and output operations.
        Response Time (Input/Read)
        The average latency in milliseconds for inbound (read) I/O requests.
        Response Time (Output/Write)
        The average latency in milliseconds for outbound (write) I/O requests.
        Transfer Rate (Total)
        The total data throughput across the port (MiB/sec).
        Transfer Rate (Input/Read)
        The data throughput received (read) by the port (MiB/sec).
        Transfer Rate (Ouput/Write)
        The data throughput sent (written) from the port (MiB/sec).
      • FC Port Error Information > Report Type
        Loss of Signal Count
        The umber of times the port lost the physical signal.
        Bad Received Character Count
        The number of invalid characters received on the FC link.
        Loss of Synchronization Count
        The number of times the port lost synchronization with the FC link.
        Link Failure Count
        The number of link failures detected.
        Received EOFa Count
        The number of EOFa (End‑of‑Frame abnormal) markers received.
        Discarded Frame Count
        The number of frames discarded by the port.
        Bad CRC Count
        The number of frames received with incorrect CRC (Cyclic Redundancy Check).
        Protocol Error Count
        The number of protocol violations detected (for example, unexpected sequences or invalid frame structures).
        Expired Frame Count
        The number of frames that expired before being processed.
        Forward Error Correction Count
        The number of errors corrected using FEC (Forward Error Correction).
      • iSCSI & NVMe/TCP Port Error Information > Report Type
        MAC CRC Error Count
        The number of frames received with a bad CRC at the Ethernet MAC layer.
        IP Error Packet Count
        The number of IP packets received with errors.
        IPv6 Error Packet Count
        The number of IPv6 packets received with errors.
        TCP Retransmit Timer Expired Count
        The number of times the TCP retransmission timer expired.
        Header Digest Error Count
        The number of packets with invalid header digest (checksum) detected.
        Data Digest Error Count
        The number of packets with invalid data digest (checksum) detected.
      • Cache > Report Type
        Usage Rate
        The percentage of cache memory currently in use.
        Write Pending Rate
        The percentage of cache occupied by write‑pending data (data waiting to be transferred to disk).
        MCU Side File Rate
        The rate at which cache data (especially write‑pending data) is transferred from the Main Control Unit (MCU) side of the controller to disk.
      • Processor > Report Type
        Usage Rate (Total)
        Shows the percentage of overall processor utilization across all workloads.
        Usage Rate (Open Target)
        Shows the percentage of processor utilization specifically for handling open system target I/O requests (hosts accessing storage as targets).
        Usage Rate (Open Initiator)
        Shows the percentage of processor utilization for open system initiator operations (storage acting as an initiator to other devices).
        Usage Rate (Open External Initiator)
        Shows the percentage of processor utilization for requests coming from external initiators (outside systems initiating I/O to the storage).
        Usage Rate (Back‑End)
        Shows the percentage of processor utilization for back‑end operations (communication with physical disks, drive groups, or other back end resources).
        Usage Rate (System)
        Shows the percentage of overall system‑level processor utilization, aggregating across all categories.
  3. In Detailed Settings, specify the values to monitor and the polling interval (in seconds).

    Detailed Settings

    Specification method

    Polling Interval

    Specify the number of seconds as a decimal number between 5 and 3,600 for the interval to get performance information.

    Volume IDs

    Specify the target volume ID in decimal notation. When specifying multiple volume IDs, you can specify up to 10 IDs by using a comma (,) as the separator between values.#1

    Port IDs

    Specify the target port ID (using the CLx-y format, specify a number for x and upper-case letters for y). When specifying multiple port IDs, you can specify up to 10 IDs by using a comma (,) as the separator between values.#1 If you selected to aggregate all the resource collectors, the combined information of all ports of both controllers is displayed.

    MPU ID/CLPR IDs

    Specify the target MPU ID (010 or 020) and CLPR ID (a number between 0 and 3) separated by a forward slash (/). When specifying multiple IDs, you can specify up to 10 IDs by using a comma (,) as the separator between values.#1 If you selected to aggregate all the resource collectors, the information combining all the MPU/CLPR information of both controllers is displayed.

    MP IDs

    Specify the target MP ID (using the xxx-yy format). When specifying multiple MP IDs, you can specify up to 10 IDs by using a comma (,) as the separator between values.#1 If you selected to aggregate all the resource collectors, the information combining all the MP information of both controllers is displayed.

    For details on the MP IDs (location) to specify, see the System Administrator Guide.
    #1
    If you have selected multiple metrics, only the first ID is displayed.
  4. Click the Apply button.


  • Graph display

    Time-series graphs are displayed for the selected items. The graphs are updated each time the specified Polling Interval (in seconds) elapses.

    • The upper part displays the graphs within the range selected in the lower part.
    • The lower part displays the range of graphs that can be displayed.

      To change the range displayed in the upper part, drag and slide the red frame or the white circle within the image. If you specified a Polling Interval of 5 seconds, you can display a maximum of 2 hours of information.

    Note:
    • For channel board (25 Gbps iSCSI optical) ports, the following values appear when you select iSCSI & NVMe/TCP Port Error Information for Report Type.
      • If you select IP Error Packet Count or IPv6 Error Packet Count for Metric Type, the total value of all ports in the channel board are output as values for each individual port.
      • If you select TCP Retransmit Timer Expired Count for Metric Type, 0 always appears for the item.
  • Data collection

    If you click the CSV EXPORT button, you can download the monitoring data as a CSV file.

    If you are monitoring the following combination of items, in the exported CSV file, -1 will be displayed in the columns that indicate performance values. Also, graph plots will not be displayed.

    • Report Type: Volume
    • Metric Type: Read Hit Rate
    • Volume IDs: Optional Volume IDs For Which No IO Is Issued
Note:
  • When ESM load is high, plots might be missing from the graphs displayed on the system monitor.
  • If maintenance work is being performed on the storage system during the monitoring period, or if a failure occurs, inaccurate monitoring data might be displayed.
  • Plots might not display immediately for the specified polling interval (in seconds).
  • If you set a longer polling interval and monitor for longer than the session timeout period, use Export Tool 2.